Glassman v. Safeco Ins. Co. of Am. ( 2023 )


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  • Filed 4/28/23
    CERTIFIED FOR PUBLICATION
    IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
    SIXTH APPELLATE DISTRICT
    SHERRY A. GLASSMAN,                        H049825
    (Santa Clara County Super. Ct.
    Plaintiff and Appellant,         No. 21CV383782)
    v.
    SAFECO INSURANCE COMPANY
    OF AMERICA,
    Defendant and Respondent.
    Civil Code section 3291 1 addresses prejudgment interest in actions for
    personal injuries. It expressly incorporates the provisions of Code of Civil
    Procedure section 998 (CCP section 998), adding interest from the date of the
    offer as a recoverable item, claimed as a cost as opposed to an element of
    damages, if a plaintiff makes a CCP section 998 offer that the defendant does
    not accept, and the plaintiff ultimately obtains a more favorable judgment.
    (Steinfeld v. Foote-Goldman Proctologic Medical Group, Inc. (1997) 
    60 Cal.App.4th 13
    , 18 (Steinfeld).) In Pilimai v. Farmers Insurance Exchange Co.
    (2006) 
    39 Cal.4th 133
     (Pilimai), the California Supreme Court held that
    1Except as otherwise noted, further unspecified statutory references
    are to the Civil Code.
    uninsured motorist (UIM) 2 proceedings are not actions for personal injury
    sounding in tort to which section 3291 applies and that such proceedings are
    instead in the nature of an action in contract arising out of a policy of
    insurance. Thus, section 3291, incorporating the cost-shifting mechanisms of
    CCP section 998 and applying them to prejudgment interest in personal-
    injury actions from the date of the offer, does not apply in a UIM proceeding.
    In this case, appellant Sherry A. Glassman prevailed in a UIM
    arbitration against respondent Safeco Insurance of America. The arbitration
    agreement was contained in a Safeco umbrella policy that provided excess
    UIM benefits, over and above those afforded by Glassman’s concurrent Safeco
    auto-liability policy. Glassman had sustained significant bystander
    emotional-distress damages during the policy period after witnessing her
    mother’s fatal injuries when an underinsured driver hit them both while they
    were walking together in a crosswalk. The arbitrator’s award, later confirmed
    by the superior court, determined that Glassman’s compensable damages
    resulting from the accident exceeded the required threshold to entitle her to
    the umbrella-policy excess UIM limits of $1 million. Before the arbitration
    2 UIM coverage provided in an auto-liability insurance policy and
    proceedings related thereto are addressed by Insurance Code sections
    11580.2–11580.5, the Uninsured Motorist Act. They apply to both uninsured
    and underinsured motorist coverage in that Insurance Code section 11580.2,
    subdivision (p)(2) “requires auto insurance policies to provide underinsured
    motorist coverage for motorists whose liability insurance is less than the
    limits carried on the injured motorist’s plan.” (Storm v. Standard Fire Ins.
    Co. (2020) 
    52 Cal.App.5th 636
    , 643 (Storm); McIsaac v. Foremost Ins. Co.
    Grand Rapids, Michigan (2021) 
    64 Cal.App.5th 418
    , 420, fn. 1 (McIsaac); see
    also Ins. Code, § 11580.2, subd. (n) [“Underinsured motorist coverage shall be
    offered with limits equal to the limits of liability for the insured’s uninsured
    motorist limits in the underlying policy, and may be offered with limits in
    excess of the uninsured motorist coverage”].)
    2
    hearing and award, Glassman had issued to Safeco a CCP section 998 offer in
    the amount of $999,999.99, one cent less than the policy limits. Safeco did not
    accept the offer, on which Glassman prevailed when the arbitrator later ruled
    she was entitled to the full $1 million umbrella-policy limits.
    After Glassman petitioned the trial court to confirm the arbitration
    award, she also sought prejudgment interest under section 3287, subdivision
    (a) (§ 3287(a)) from the date of her CCP section 998 offer. This subdivision
    provides a right to prejudgment interest when a person “is entitled to recover
    damages certain, or capable of being made certain by calculation” (section
    3287(a)), and the right to recover is vested in the person on a particular day.
    Unlike section 3291, which Glassman initially invoked, it contains no
    reference to CCP section 998. Thus, under section 3287(a), a liquidated
    damage claim triggers the entitlement to prejudgment interest not as a cost,
    as it is treated under section 3291 if a plaintiff prevails on a CCP section 998
    offer, but as a form of additional compensatory damages. For a plaintiff to
    obtain prejudgment interest under section 3287(a), the defendant must have
    known or have been able to calculate from reasonably available information
    the amount of the plaintiff’s liquidated claim owed as of a particular day.
    (Collins v. City of Los Angeles (2012) 
    205 Cal.App.4th 140
    , 150–151 (Collins);
    Cassinos v. Union Oil Co. (1993) 
    14 Cal.App.4th 1770
    , 1789 (Cassinos).)
    The trial court here denied Glassman’s request for prejudgment
    interest under section 3287(a), concluding that the amount of her policy-
    limits claim for excess UIM benefits was not certain or capable of being made
    certain and this uncertainty was not fixed by Glassman’s CCP section 998
    policy-limits offer. On appeal from the ensuing judgment confirming the
    arbitration award, she challenges only the court’s denial of prejudgment
    interest under section 3287(a). She urges, as she did below, that to promote
    3
    settlement and fair treatment of an insured by an insurer, an insured’s
    prevailing CCP section 998 offer in a UIM proceeding effectively liquidates
    the insured’s claim in the amount and as of the date of the offer under section
    3287(a), mandating an award of prejudgment interest. We reject this
    contention, concluding that neither section 3287(a) nor CCP section 998,
    taken separately or together, so provide.
    Glassman further contends that her CCP section 998 offer in this case
    did, in fact, establish both the sum certain and the date certain of her
    underlying claim to the $1 million policy limits for purposes of awarding her
    prejudgment interest from the date of her offer under section 3287(a), and
    that Safeco knew or had reasonable access to sufficient information about her
    special damages alone at that point to make their recoverable amount from
    Safeco—the umbrella-policy limits—certain. But, as is clear from the record,
    when the trial court denied Glassman’s request for prejudgment interest
    under section 3287(a), lacking within the realm of its consideration was
    evidence of Safeco’s knowledge that Glassman’s economic losses or special
    damages resulting from the accident—her hard costs—in fact already
    exceeded the umbrella-policy limits when her CCP section 998 offer was
    made, or an evidentiary showing that this information was then reasonably
    available to Safeco. Finally, we reject as forfeited Glassman’s newly
    articulated and alternative claim to prejudgment interest under section 3287
    from the date of the arbitration award.
    We accordingly affirm the judgment.
    4
    STATEMENT OF THE CASE
    I.    The Accident 3
    “On January 22, 2015, . . . [Glassman] and her mother . . . were leaving
    a hospital” where [Glassman]’s father was staying after having suffered a
    heart attack. “[Glassman] and her mother . . . were crossing the street . . .
    when an SUV . . . failed to yield and struck both of them.” “[Glassman] recalls
    she was hit first and then her mother[,] . . . [who] was dragged and pulled up
    into the SUV’s wheel well, causing her to suffer mortal injuries.” After hitting
    them, “the SUV did not stop so [Glassman] ran after it pounding on the
    vehicle to get the driver’s attention. [Glassman then] went to her mother[,]
    who was face down on the ground” and bleeding. “Her [mother’s] leg was in a
    very bizarre position[,] which looked unnatural; eventually it was discovered
    her pelvis was crushed[,] so the leg was not connected to the rest of her body.
    [Glassman] held her mother’s hand and squeezed her mother’s fingers while
    her mother was whimpering. [Glassman] was eventually covered with her
    mother’s blood.”
    Once medical personnel arrived, Glassman was led away from the
    scene and she fainted. She “suffered relatively minor physical injury [from]
    the accident, but her psychological damages were severe. She was
    transported to the same hospital as her mother, who passed away in the
    ambulance on the way.” After a few hours during which Glassman believed
    her mother was still being treated, “[she] was told of her mother’s fate and
    hospital personnel asked if [Glassman] would like to see her [mother’s body].
    3We derive the underlying facts mostly from the arbitrator’s final
    award dated May 22, 2021. Other facts are derived solely from the papers
    that were actually before the trial court when and as it considered and denied
    Glassman’s request for prejudgment interest.
    5
    When [Glassman] indicated she would, she was brought into a room where
    her dead mother was shrouded in a blanket up to her neck” but with injuries
    to her head and neck still visible. Glassman stayed in the room for a few
    hours until she was convinced to leave. The next day, “[Glassman] was
    charged with the responsibility to inform her father that his wife of 62 years
    was killed in an accident” and she “coordinated the final arrangements for
    her mother.”
    II.   Glassman’s Injuries
    After the accident, and “[v]irtually every day since,” as the arbitrator
    found, Glassman, who [had been] diagnosed with PTSD from the incident,
    “suffered from flashbacks, i.e., sudden, uncontrollable[,] and vivid memories
    of the accident. These flashbacks are triggered by reminders, including Ford
    SUV vehicles, crosswalks and intersections, sirens, traffic, being a passenger
    in a car, reading about or seeing car crashes in movies or videos, seeing
    pictures of her mother, and other such objects and events. Over time, these
    flashbacks have become somewhat less frequent[,] but they still occur almost
    every day and they remain extremely disturbing. At night, [Glassman] often
    suffers from nightmares related to her mother’s death. [She] is hyper-vigilant
    and experiences overwhelming anxiety. [She] also suffers from pre-existing
    depression, which has been exacerbated since her mother was killed.”
    As the arbitrator further found, “[w]hile the accident is probably the
    most devastating [experience Glassman] has suffered, she unfortunately has
    a complex physical and psychological history.” In her records and in
    testimony presented to the arbitrator, there was pre-accident evidence of
    family strife and related issues; multiple medical problems, procedures, and
    surgeries; three prior auto accidents causing injuries; and other traumatic
    experiences. Even before the accident, Glassman had suffered from chronic
    6
    pain, cognitive issues, sleeping problems, and mental-health conditions,
    including a prior PTSD diagnosis. She had been treated by numerous medical
    professionals with varied specialties for many things and had had periods of
    being away from work due to medical or mental-health issues, including on
    the day when the accident involving her mother happened.
    But after the accident and her mother’s death, according to one of her
    doctors, “[Glassman] was inconsolable,” “disoriented,” and “in the worst
    shape of her life.” She sought psychiatric treatment and was hospitalized.
    She was suffering from “post-traumatic stress, suicidal ideations, depression,
    and hourly flashbacks about the accident” and “significant grief and ongoing
    chronic PTSD symptoms.” She was also experiencing “side effects from all of
    the medicines she [was] taking, including opioids for constant pain
    management. She tried to self-manage the medications[,] often with
    unfavorable results.” Family strife and related issues continued, along with
    new and acrimonious marital problems ultimately leading to her divorce.
    In the wake of the accident, she also experienced other stressors and
    trauma, including her companion dog having to be euthanized, witnessing a
    fatal police shooting, and seeing another person being hit by a truck. Still,
    according to the arbitrator, one of her doctors described her PTSD as “directly
    relating to her [having witnessed] her mother’s death”—a view echoed
    consistently in the evidence presented to the arbitrator from her other
    doctors—and as “one of the most resistant to treatment” that that doctor had
    ever seen. Another of Glassman’s doctors likewise opined that “while [her] life
    has had ups and downs with various stressors, the sole cause of her [post-
    accident] PTSD was witnessing the horrific death of her mother and not from
    the other stressors in her life, past or present.” Yet another of her doctors
    offered that “[Glassman] had the worst case [of PTSD] he had ever seen . . .
    7
    and that this was the direct result of seeing her mother’s death and was not
    due to other stressors in [her] life.”
    Even the neuropsychologist and PTSD expert retained by Safeco to
    “assess Ms. Glassman’s emotional condition in relation to the accident and
    loss of her mother,” and who had conducted an independent medical
    examination (IME) in early 2020, a year before the arbitration hearing,
    opined in her written report 4 that Glassman’s “ ‘PTSD is directly related to
    the motor vehicle accident in which her mother perished and the pre-existing
    depressive disorder has been exacerbated by her inability to manage the
    PTSD symptoms. . . . In all probability, Ms. Glassman will need to continue
    the treatment, including medication, for the foreseeable future to help her
    maintain the limited lifestyle that she has presently.’ ” This Safeco-retained
    doctor was later called by both sides to testify at the arbitration hearing.
    III.    The Arbitration and the Final Award
    As noted, the applicable Safeco umbrella policy provided $1 million in
    excess UIM benefits. It incorporated or referenced various terms of
    Glassman’s corresponding Safeco auto policy, including its UIM coverage and
    arbitration provisions. 5 The auto policy’s UIM coverage mirrored the scope of
    coverage required by Insurance Code section 11580.2, under which Safeco
    4   The report itself is not part of the properly delineated record.
    5 Insurance Code section 11580.2, addressing UIM coverage
    requirements, excludes from its application auto-liability coverage “provided
    only on an excess or umbrella basis.” (Ins. Code, § 11580.2, subd. (a)(1).) But
    the Safeco umbrella policy at issue expressly incorporated the relevant UIM
    provisions of Glassman’s related Safeco auto policy, which, from the portions
    that are in the record, reflected the requirements of Insurance Code
    section 11580.2.
    8
    agreed to pay, as relevant here, “damages which an insured is legally entitled
    to recover from the owner or operator of an uninsured motor vehicle because
    of . . . [b]odily injury sustained by that insured and caused by an accident.”
    The umbrella policy, based on certain express limits, conditions, and
    exclusions, committed Safeco to pay excess UIM benefits in the form of
    “damages resulting from bodily injury which are in excess” of the required
    minimum limits provided under her underlying auto policy, plus the limit of
    “any other insurance collectible by the Insured which an Insured is legally
    entitled to recover from the owner or operator of an uninsured/underinsured
    motor vehicle,” and “in accordance with the terms and conditions” of the
    underlying auto policy at the time of the loss.
    For her damages from the accident, Glassman received $255,000 under
    her Safeco auto policy, which included $5,000 in medical-expense
    reimbursement. And she received another $250,000 from the underinsured
    driver’s auto policy. After making a claim under the umbrella policy for
    excess UIM benefits and Safeco having denied it, Glassman initiated
    arbitration proceedings under the policy’s arbitration agreement,
    incorporated from the underlying auto policy. Under that provision, if the
    parties “[did] not agree . . . [w]hether th[e] insured is legally entitled to
    recover damages; or . . . [a]s to the amount of damages which are recoverable
    by th[e] insured[] from the owner or operator of an uninsured motor vehicle
    then the matter will be settled by arbitration.” Further, “[a]ny decision of the
    arbitrator will be binding as to . . . [w]hether the Insured is legally entitled to
    recover damages; and . . . [t]he amount of damages.”
    The parties engaged in pre-hearing discovery, including Glassman’s
    submission to the IME conducted by Safeco’s retained neuropsychologist and
    PTSD expert, whose written report dated January 9, 2020 (not in the record),
    9
    was favorable to Glassman both in terms of the extent of her injuries and
    their cause from having witnessed the accident that killed her mother. On
    February 12, 2020, Glassman issued her CCP section 998 offer to Safeco for
    $999,999.99, one cent less than the umbrella-policy limits. Safeco did not
    accept the offer. The arbitration hearing, complete with witness testimony,
    occurred nearly a year later, on January 26 and 27, 2021.
    Glassman contended in the arbitration hearing that she was entitled to
    an award of $4 million, representing the “cost of all her medical care, her
    wage loss, the cost of her future medical care, and damages for past and
    future emotional distress.” She requested an award of this amount
    representing her compensatory damages against the underinsured driver
    even though the limits of the Safeco umbrella policy at issue were $1 million,
    citing Insurance Code section 11580.2, subdivision (f), which requires the
    UIM arbitrator to determine only (1) whether the insured is entitled to
    recover against the uninsured motorist and (2) if so, the amount of the
    damages. As noted, by the time of the arbitration, Glassman had already
    settled with the underinsured driver’s insurer for $250,000, and she had
    received $250,000 in UIM coverage available through her own Safeco auto
    policy, plus $5,000 for her medical expenses. Under the terms of the umbrella
    policy, to recover the $1 million policy limits, Glassman’s recoverable
    damages against the underinsured driver had to reach or exceed $1,505,000,
    composed of the limits plus the $505,000 she had already received.
    Safeco, for its part, contended in the arbitration hearing that Glassman
    had already been adequately compensated for her damages proximately
    resulting from the accident by her prior receipt of the $505,000, and therefore
    no excess UIM benefits under the umbrella policy were awardable. It argued
    that while Glassman’s bystander-distress damages caused by her having
    10
    contemporaneously witnessed the SUV hit and injure her mother were
    recoverable, her additional damages sustained from witnessing the
    immediate aftermath of the impact as her mother was caught in the wheel
    well of the SUV and then dropped to the street, from comforting her ailing
    and injured mother in the street, from later learning of her mother’s death,
    and then from seeing her mother’s dead body in the hospital, along with her
    subsequent grief and emotional distress, were not. Its argument rested on its
    asserted legal theory that Glassman’s emotional and psychological distress
    from the entire experience could be parsed into separate and distinct “slice[s]
    in time,” with only damages from her contemporaneous observation of the
    immediate impact to her mother as recoverable. But Safeco also disputed
    causation, arguing that Glassman’s emotionally distressed condition after the
    accident could not solely be attributed to it and was instead or also caused by
    the many other documented traumas and medical issues in her life, both
    before and after the accident. 6
    In her final award dated May 22, 2021, 7 the arbitrator largely rejected
    Safeco’s attempts to limit Glassman’s recoverable damages resulting from the
    6  Safeco also raises issues about the proper measure of Glassman’s
    medical costs as damages in view of Howell v. Hamilton Meats & Provisions,
    Inc. (2011) 
    52 Cal.4th 541
    , 555–556 (Howell), which arguably would have
    limited the amount of her compensable damages for medical expenses to the
    “lesser of (a) the amount paid or incurred for medical services, and (b) the
    reasonable value of the services.” (Id. at p. 556.) Safeco contends that because
    of Howell, its possession of Glassman’s medical bills alone (part of
    Glassman’s motion to augment, discussed post) would not have yielded
    certainty of her special damages. The arbitrator did not specifically address
    this Howell issue in her final award, except to note that many of Glassman’s
    medical expenses were covered by insurance.
    7 The arbitrator’s final award was preceded by an interim award in
    Glassman’s favor dated April 12, 2021, which was silent as to costs.
    Glassman then requested an award of costs from the arbitrator.
    11
    accident, whether on the legal basis of its “slice in time” argument capping
    her damages at those caused only by her contemporaneous observation of her
    mother’s injuries or its factual claim that the full extent of her injuries, and
    hence her damages, was caused not by the accident but other traumatic
    events in her life, whether before or after. But the arbitrator nonetheless did
    not include in the calculation of Glassman’s damages to meet the threshold
    for her recovery of the umbrella-policy limits “any damages [incurred] as a
    result of [Glassman’s] observations after she fainted at the scene.
    Observations of her mother in the hospital were not considered in
    determining damages.”
    The arbitrator ultimately concluded in the final award that Glassman’s
    compensable (but unquantified) “monetary expenses” were still “well over
    $1 million, a large part of which [we]re medical expenses covered by
    insurance.” Her lost wages for the 21-month period after the accident and
    until her later return to work were found by the arbitrator to have totaled
    $179,000. And the present value of her “future psychotherapy treatment will
    be about $195,129.” Thus, according to the arbitrator, after roughly totaling
    Glassman’s special damages alone at somewhere “well over” $1,374,129, the
    total of her proven and recoverable “economic and emotional distress”
    damages resulting from the accident exceeded $1,505,000.
    As noted, this was the threshold amount for Glassman to receive an
    award of $1 million—the umbrella-policy limits—after factoring in the
    $250,000 she had already received from the underinsured driver plus the
    $255,000 from her own Safeco auto policy.
    The arbitrator accordingly determined that because Glassman’s proven
    and compensable damages met the $1,505,000 floor, she was entitled to the
    full $1 million policy limits. The arbitrator declined to determine the exact
    12
    amount of Glassman’s damages recoverable against the UIM driver, as
    Glassman had requested. For this, the arbitrator cited Cothron v.
    Interinsurance Exchange (1980) 
    103 Cal.App.3d 853
    , 858–859 (Cothron), and
    the principle that no more than the policy limits can be awarded in a UIM
    arbitration in any event (id. at p. 860). (See also State Farm Mut. Auto Ins.
    Co. v. Superior Court (2004) 
    123 Cal.App.4th 1424
    , 1431 (State Farm).)
    The arbitrator ultimately did not award costs as also requested by
    Glassman, including those made recoverable by her prevailing CCP section
    998 offer, determining that this decision was beyond the scope of the arbitral
    authority, set by contract in the form of the umbrella policy of insurance. The
    arbitrator thus denied Glassman’s costs request without prejudice to the
    superior court deciding this issue in connection with a petition to confirm the
    final award. (See Storm, supra, v. 52 Cal.App.5th at pp. 646–648 [where UIM
    policy defines scope of arbitration agreement in parallel with Ins. Code,
    § 11580.2, it is for court, not arbitrator to award costs incurred during
    arbitration proceedings].)
    IV.   Proceedings in the Superior Court
    After the arbitrator issued her final award in Glassman’s favor, on
    June 7, 2021, Glassman filed a petition in the superior court to confirm it
    under Code of Civil Procedure section 1285, along with her declaration and a
    notice of hearing, which the clerk set for August 31, 2021. 8 The petition’s
    prayer sought entry of judgment in conformity with the award and “costs as a
    matter of right pursuant to [Code of Civil Procedure] Sections 1032(b),
    8Safeco had previously filed its own separate petition to confirm the
    interim arbitration award (Santa Clara Superior Court case no.
    21CV382874). That proceeding is not relevant to the issues on appeal.
    13
    1293.2, 3291, and 998.” 9 The prayer also sought “recoverable costs and
    interest” and “such other and further relief as the Court may deem proper.”
    Section 3291, as noted, provides for prejudgment interest as a recoverable
    cost when a plaintiff prevails on a CCP section 998 offer in personal-injury
    actions. Glassman’s petition did not expressly seek prejudgment interest
    under section 3287, and her supporting two-page declaration filed with the
    petition contained no facts addressing this issue, meaning facts supportive of
    the conclusion that Glassman’s damages were certain or capable of being
    made certain as of a particular day.
    Safeco initially filed a demurrer to Glassman’s petition and a motion to
    strike the portions of it that included the word “interest” and allegations
    claiming a right to prejudgment interest under section 3291, relying on
    Pilimai. Safeco requested that these motions challenging the pleading be
    heard concurrently with Glassman’s petition. But these motions were
    ultimately set by the clerk to be heard on October 26, 2021, some two months
    after the scheduled hearing on Glassman’s petition to confirm the award. In
    the required meet-and-confer process leading up to those motion filings, on
    July 7, 2021, Glassman conveyed to Safeco that she was no longer pursuing
    prejudgment interest under section 3291—recognizing Pilimai’s holding—but
    instead under section 3287. 10 And her points and authorities in opposition to
    9 The citation to section 3291 was apparently intended to be to the Civil
    Code, not the Code of Civil Procedure.
    10
    Subdivision (b) of section 3287 applies to unliquidated claims and it is
    discretionary. (Espejo v. The Copley Press, Inc. (2017) 
    13 Cal.App.5th 329
    ,
    375–376 (Espejo) [court in its discretion may award prejudgment interest
    under section 3287, subd. (b) for equitable and unliquidated claims such as
    restitution to make injured party whole].) Although Glassman alternatively
    sought prejudgment interest under this subdivision in the trial court, she
    appears to have abandoned this claim on appeal.
    14
    Safeco’s demurrer and motion to strike, set for hearing in October, made this
    claim.
    On August 16, 2021, Glassman filed an amended declaration in support
    of her petition to confirm the arbitration award, still set for hearing on
    August 31st. The amended declaration briefly included the new fact of her
    February 12, 2020 CCP section 998 offer.
    Attached to the amended declaration was a memorandum of points and
    authorities in support of her petition, which Glassman had previously
    omitted with her papers, and which was untimely for a hearing noticed for
    August 31st. (Code Civ. Proc., § 1005.) There, Glassman for the first time
    expressly argued she was entitled to an award of prejudgment interest under
    section 3287(a). She argued that a prevailing CCP section 998 offer made by
    an insured in the context of a UIM proceeding liquidates the claim under
    section 3287(a) when the offer expires without acceptance, to mandate an
    award of prejudgment interest as of that date. She also argued that when
    Safeco’s retained expert who had conducted the IME issued the written
    report favorable to Glassman in January 2020, her “economic damages,
    including medical expenses, exceeded [the umbrella-]policy limits.” She
    offered no evidence to support this stated fact, including the report, or to
    support that Safeco knew this fact, or had reasonable access to information
    from which it should have known it.
    In addition to its demurrer and motion to strike, on August 18, 2021,
    Safeco filed opposition to Glassman’s petition, in which it requested a
    continuance of the August 31st hearing date, given the later date set for its
    motions challenging Glassman’s pleading. Safeco also objected to and moved
    to strike her belatedly filed memorandum of points and authorities in support
    of her petition. And Safeco specifically opposed Glassman’s request for
    15
    prejudgment interest under section 3287, contending that her petition had
    not made or preserved this claim. 11
    On August 23, 2021, Safeco filed a supplemental brief in opposition to
    Glassman’s newly asserted right to prejudgment interest specifically under
    section 3287. This brief reached the merits of Glassman’s request, and argued
    that prejudgment interest was not available under section 3287 in a UIM
    proceeding as a matter of law, no “damages” as contemplated in section
    3287(a) being awardable. Safeco further urged that Glassman’s damages,
    especially her general damages for emotional distress, were not in any event
    certain or capable of being made certain before the final arbitration award
    and that Glassman’s CCP section 998 offer did not change or affect the prior
    state of uncertainty.
    Glassman’s reply in support of her petition to confirm the arbitration
    award, filed on August 25, 2021, offered her supplemental declaration. There,
    she pointed out that she had previously asserted to Safeco in July 2021 her
    right to prejudgment interest under section 3287 and had also filed her brief
    in opposition to Safeco’s motion to strike raising “detailed arguments” on this
    issue. She further averred that she “would have filed a separate motion for
    prejudgment interest under . . . section 3287” had “Safeco not filed its motion
    to strike [the] request for interest” from her petition to confirm the
    arbitration award. She also attached her opposition to Safeco’s motion to
    11  Safeco wisely abandons this waiver/forfeiture claim on appeal. “A
    general prayer in the complaint is adequate to support an award of
    prejudgment interest. ‘No specific request for interest need be included in the
    complaint; a prayer seeking “such other and further relief as may be proper”
    is sufficient for the court to invoke its power to award prejudgment interest.’ ”
    (North Oakland Medical Clinic v. Rogers (1998) 
    65 Cal.App.4th 824
    , 829
    (North Oakland).)
    16
    strike, which she apparently thought would be heard concurrently with her
    petition on August 31st.
    Glassman’s reply points and authorities in support of her petition
    maintained her legal argument that her CCP section 998 offer had effectively
    liquidated her claim for purposes of applying section 3287(a) and that her
    having prevailed on her offer, without more, entitled her to prejudgment
    interest under section 3287(a) as a matter of law as of March 13, 2020, when
    the offer expired. She argued in a footnote, with no supporting evidence, that
    her damages were in fact ascertainable in January 2020, “when Safeco’s own
    expert . . . rendered her report based on the [IME] of [Glassman], and all the
    discovery [Glassman] produced in response to Safeco’s demands. . . . At this
    point in time, [Glassman’s] economic damages, including medical expenses,
    exceeded policy limits ($1,000,000). Thus, in the alternative, [Glassman’s]
    damages were a sum certain on January 18, 2020[,] for purposes of . . .
    section 3287. The evidence was not disputed.”
    At the hearing on Glassman’s petition on August 31, 2021, the court
    continued the matter to September 21, 2021, and ordered no further briefing.
    The court apparently had not received Safeco’s supplemental opposition,
    which addressed Glassman’s claim for prejudgment interest under section
    3287(a) and which had been previously filed or submitted to the clerk for
    filing, and ordered Safeco to refile that brief, which it did that day.
    Before the continued hearing date, the court issued a tentative ruling
    confirming the arbitrator’s final award in Glassman’s favor but denying
    prejudgment interest under section 3287. Glassman challenged this tentative
    denial and argued at the hearing that CCP section 998 “is not just a cost-
    shifting statute; it also acts independently to liquidate the claim, just as it
    does for purposes of personal injury claims under [s]ection 3291.” She further
    17
    argued that “[s]ince Pilimai precludes prejudgment interest under [s]ection
    3291 in [UIM] proceedings because such a proceeding is an action based on
    contract, then [s]ection 3287, along with [CCP s]ection 998, is a natural and
    appropriate mechanism to put Safeco on equal footing with other litigants.”
    At the hearing, Glassman also corrected the date from which she
    sought mandatory prejudgment interest under section 3287(a), advancing
    that date to February 12, 2020, the date of her CCP section 998 offer, from
    the March 2020 date by which Safeco had not timely accepted it. She further
    clarified that prejudgment interest could stop accruing as of September 13,
    2021, when she unconditionally received from Safeco its tender of the full $1
    million umbrella-policy limits, for a total of 580 days.
    At the end of the hearing, the court orally announced it was adopting
    its tentative ruling granting Glassman’s petition but denying prejudgment
    interest, which it did in a written order filed that day. The court reasoned
    that section 3287(a) did not apply here, concluding that Glassman’s “damages
    at issue in the arbitration proceeding . . . were not certain or capable of being
    made certain as there was a significant general damage claim that was
    disputed by the parties. While the Court understands the cost-shifting
    purposes of CCP 998, the fact that [Glassman] prevailed above her 998 offer
    at arbitration does not equate to recovery of prejudgment interest pursuant
    to [s]ection 3287(a).” In its order, the court also vacated as moot the later
    hearings set for Safeco’s demurrer to Glassman’s petition and motion to
    strike allegations concerning prejudgment interest.
    The parties later litigated the issue of costs, some which had shifted on
    account of Glassman’s CCP section 998 offer, resulting in a $67,046.20 award
    in Glassman’s favor. On January 14, 2022, the court entered a written order
    18
    and judgment, confirming the final arbitration award and making its ruling
    and award as to costs.
    Glassman timely appealed, limiting her appeal “to the portion of the
    [j]udgment denying [her] request for prejudgment interest.”
    DISCUSSION
    I.      The Scope of the Appellate Record
    The day after Glassman filed her notice of appeal, and before she
    designated the appellate record under rule 8.122 of the California Rules of
    Court, 12 Safeco timely filed its Respondent’s Notice Electing to Use an
    Appendix under rule 8.124(a)(1)(B). Glassman later filed her own designation
    of the record, electing a clerk’s transcript and listing the documents she
    wished to be included, as provided in rule 8.122(a)(1).
    The superior court clerk then erroneously proceeded to prepare a
    clerk’s transcript for this appeal despite Safeco having timely elected to use
    an appendix, which should have controlled the record under rule
    8.124(a)(1)(B). This rule provides in relevant part that “[u]nless the superior
    court orders otherwise on a motion served and filed within 10 days after the
    notice of election is served, this rule governs if: . . . (B) [t]he respondent
    serves and files a notice in the superior court electing to use an appendix
    under this rule within 10 days after the notice of appeal is filed and no
    waiver of the fee for a clerk’s transcript is granted to the appellant.” Safeco
    complied with this rule, the superior court did not rule otherwise, and there
    was no fee waiver. Because Safeco proceeded this way, it attempted to file its
    appendix with its respondent’s brief. But the clerk of this court would not
    12   Further undesignated citations to rules are to the California Rules of
    Court.
    19
    accept it, a clerk’s transcript from the superior court already having been
    filed.
    Safeco then filed a motion to augment the record in this court under
    rule 8.155(a), seeking to add to the record what it had sought to include in its
    appendix. This consisted of the following three documents: 1) full
    Acknowledgment of Satisfaction of Judgment executed by Glassman on
    February 11, 2022; 2) Respondent’s Notice Electing to Use an Appendix filed
    in the superior court on February 15, 2022; and 3) the Superior Court docket
    sheet listing filings in the case in that court. The ruling on this motion to
    augment the record was deferred by order dated August 24, 2022, for
    consideration with the merits of the appeal. Over Glassman’s opposition, we
    grant Safeco’s motion to augment the record to include these three
    documents, attached to the motion, as Safeco timely filed its election to
    proceed by appendix, and under rule 8.124(a)(1)(B), that should have
    controlled, and the appeal should have proceeded by appendix instead of with
    a clerk’s transcript as later designated by Glassman.
    Glassman also filed a motion to augment the record, which this court
    by order of June 24, 2022, deemed a request for judicial notice and likewise
    deferred for consideration with the appeal. The materials that are the subject
    of this motion consist of Glassman’s opposition to Safeco’s motion to tax costs
    in the trial court and her supporting declaration, both filed on December 21,
    2021, three months after the trial court had already ruled on Glassman’s
    request for prejudgment interest. 13 Thus, these documents were not before or
    considered by the trial court when it made the ruling that is the subject of the
    The documents include some of Glassman’s earlier discovery
    13
    responses and portions of the written summary report from the January 2020
    IME of Glassman conducted by Safeco’s retained expert.
    20
    appeal and were not taken into account for the point now urged—that
    Glassman’s damages were certain or capable of being made certain as of the
    date of her CCP section 998 offer in February 2020. In support of the motion,
    Glassman avers that when she “designated the record in this case, [she] did
    not anticipate that the pleadings concerning” Safeco’s later motion to tax
    costs “were relevant to the issue of prejudgment interest.” She urges that the
    materials contain “information supporting [her] appeal on the issue of
    prejudgment interest as they show the information Safeco had in its
    possession at the time [it was] served with” her CCP section 998 offer.
    Safeco opposes the motion to add these materials to the appellate
    record or have them considered on review on the ground they were not before
    the trial court when it made the ruling now on appeal, and it seeks judicial
    notice of five facts in support of its opposition, the ruling on which was also
    deferred for consideration with the appeal. 14
    We take judicial notice of the five facts for the limited purpose of ruling
    on Glassman’s motion to augment, deemed one for judicial notice, and we
    deny the motion. Elemental to appellate practice and procedure is that a
    reviewing court will ordinarily not consider on appeal matters that were not
    presented to the trial court when it made the challenged ruling, including
    matters of which an appellate court may take judicial notice under Evidence
    Code section 459. (Vons Cos., Inc. v. Seabest Foods, Inc. (1996) 
    14 Cal.4th 14
     The facts, which seem undisputed, in essence are: 1) the only issue on
    appeal is the denial of prejudgment interest; 2) the trial court made this
    ruling on September 21, 2021; 3) Glassman never sought reconsideration of
    the ruling in the trial court; 4) she filed in the trial court the documents she
    now seeks to include in the appellate record on December 21, 2021, in
    connection with Safeco’s motion to strike or tax her claimed costs; and 5) the
    documents were not before the court when it ruled on Glassman’s request for
    prejudgment interest.
    21
    434, 444, fn. 3; [appellate court will not generally take judicial notice of
    matters that were not before the trial court absent exceptional
    circumstances]; Brosterhous v. State Bar of California (1995) 
    12 Cal.4th 315
    ,
    325 [appellate courts may properly decline to take judicial notice of a matter
    that should have been but was not first presented to trial court for
    consideration in the first instance]; DeYoung v. Del Mar Thoroughbred Club
    (1984) 
    159 Cal.App.3d 858
    , 863 [appellate courts should not generally
    judicially notice document that although on file in trial court was not
    presented to and considered by that court in first instance].)
    “ ‘It has long been the general rule and understanding that “an appeal
    reviews the correctness of [an order] as of the time of its rendition, upon a
    record of matters which were before the trial court for its consideration” ’
    [Citation.]” (In re B.D. (2008) 
    159 Cal.App.4th 1218
    , 1239.) Documents not
    presented in the trial proceeding generally cannot be included as part of the
    record on appeal and must be disregarded on appeal as beyond the scope of
    review. (Doers v. Golden Gate Bridge, Highway & Trans. Dist. (1979) 
    23 Cal.3d 180
    , 184, fn. 1 (Doers); Christ v. Schwartz (2016) 
    2 Cal.App.5th 440
    ,
    450, fn. 5; Pulver v. Avco Financial Services (1986) 
    182 Cal.App.3d 622
    , 631–
    632 (Pulver).) Further, even if a reviewing court takes judicial notice of
    documents, it is not for the truth of matters asserted therein (Guarantee
    Forklift, Inc. v. Capacity of Texas, Inc. (2017) 
    11 Cal.App.5th 1066
    , 1075), and
    here, Glassman’s motion extends to the truth of facts bearing on Safeco’s
    knowledge of her damages, or possession of information from which this
    knowledge could have been derived, when she made her CCP section 998
    offer.
    Glassman urges that because these additional matters she seeks to
    include within the record on appeal include documents or facts that predate
    22
    the trial court’s challenged decision, the facts and documents are not actually
    new and should be within the scope of our review. But these matters were
    still not before the trial court as it ruled on prejudgment interest. It would
    undermine basic principles of appellate review to include within the scope of
    our review matters that a party perhaps should have, but did not, offer to the
    trial court in the first instance in making the ruling now challenged on
    appeal.
    That Glassman placed these documents and facts before the trial court
    in the same case but for a different and later motion (in opposition to Safeco’s
    motion to tax costs) does not alter this conclusion. Nor does the fact that the
    arbitrator referred to or discussed in the final award, which is in the record,
    some of the matters now sought to be included within the scope of review.
    The arbitrator’s final award took into account and discussed not just
    documents and medical records that had apparently been exchanged in
    discovery and later were admitted into evidence at the hearing but also
    testimony of witnesses in the two-day evidentiary hearing that took place a
    year after Glassman’s CCP section 998 offer. And the decision does not
    necessarily identify or separate the particular evidentiary sources that led to
    the arbitrator’s specific findings and conclusions on Glassman’s damages, at
    least not in a way that would affect our analysis of the proper scope of the
    record in this appeal.
    Finally, it is not the case, as Glassman contends, that the purpose of
    the proposed additions to the record “is to show the amount involved.” It is
    more importantly for her to argue the certainty of the amounts of her special
    damages as of the date of her CCP section 998 offer and the degree of Safeco’s
    knowledge or awareness of those amounts and that certainty at the time.
    This is a far different and more expansive factual issue and one Safeco did
    23
    not have the opportunity to rebut below with its own evidence, and it involves
    evidence that the trial court was not presented with when it ruled on
    prejudgment interest.
    Glassman also separately moves this court to take evidence on appeal
    and for an independent factual finding, both under Code of Civil Procedure
    section 909 and rule 8.252(b) and (c). The evidence she seeks to add to the
    record in this way is a letter dated March 12, 2020, from Safeco’s counsel to
    hers in which Safeco affirmatively rejected her CCP section 998 offer and
    statements included within the letter that go to Safeco’s then-existing state of
    knowledge of the extent of her special damages. The independent factual
    finding she seeks us to make from the letter is that Safeco “possessed
    sufficient information to calculate [Glassman]’s damages up to the $1 million
    policy limit at the time of” her CCP section 998 offer in February 2020—the
    evidentiary gap directly bearing on Glassman’s claimed right to prejudgment
    interest under section 3287(a) that she failed to fill in the trial court.
    Glassman asserts that the letter is “newly discovered evidence” and
    was not presented to the trial court because she only became aware of it just
    before filing her motion in this court on September 6, 2022, after Safeco had
    filed its respondent’s brief. Although the letter was contained within her
    former attorney’s files, she avers she was medically advised at the time the
    letter was sent (as distinct from almost two years later when the trial court
    considered and ruled on prejudgment interest) to allow her attorney to
    handle and respond to matters concerning the then-pending arbitration. She
    further asserts that the letter constitutes evidence so conclusive that it
    compels the direction of a judgment in her favor, that its effect on the appeal
    is decisive, that it would enable this court to make a final determination of
    24
    the issues without further proceedings in the trial court, and that exceptional
    circumstances warrant granting her motion, which Safeco opposes.
    Under Code of Civil Procedure section 909, “an appellate court may
    exercise its discretion to consider evidence that was not before the trial court
    in ‘ “exceptional circumstances.” ’ (In re Zeth S. (2003) 
    31 Cal.4th 396
    , 405,
    italics omitted [(Zeth)].) Moreover, this authority may be exercised only . . .
    [when] the evidence arose after judgment or was unavailable to the movant
    before judgment [citation]; and [the] evidence supports the affirmance of the
    court’s judgment [citation].” (Lewis v. YouTube LLC (2015) 
    244 Cal.App.4th 118
    , 123.) The power to receive new evidence and make factual findings “
    ‘should be exercised sparingly.’ ” (Zeth, at p. 405; MMM Holdings, Inc. v.
    Reich (2018) 
    21 Cal.App.5th 167
    , 187; Diaz v. Professional Community
    Management, Inc. (2017) 
    16 Cal.App.5th 1190
    , 1213; Bombardier
    Recreational Products, Inc. v. Dow Chemical Canada ULC (2013) 
    216 Cal.App.4th 591
    , 605 (Bombardier) [discretionary power to make findings on
    review rarely exercised and only sparingly and in exceptional circumstances,
    absent which no findings should be made]; Tupman v. Haberkern (1929) 
    208 Cal. 256
    , 269 (Tupman) [even in exceptional circumstances, power to make
    findings should be exercised only when doing so will terminate the litigation,
    either by affirming judgment or reversing with directions to enter judgment
    for appellant when it is clear losing party could not make a substantial
    showing in its favor on remand].)
    As a basic principle of appellate review, appellate courts will not use
    Code of Civil Procedure section 909 to resolve conflicts in the evidence or to
    substitute their own factual determinations for those of the trial court,
    especially for the purpose of outright reversal or remand for a new trial or
    hearing, as doing so “would effectively usurp the power of the trial court as
    25
    an arbitrator of the facts.” (Tupman, supra, 208 Cal. at p. 269; see also
    Philippine Export & Foreign Loan Guaranty Corp. v. Chuidian (1990) 
    218 Cal.App.3d 1058
    , 1090 [power of reviewing court to take evidence is never
    used where there is conflicting evidence in the record and substantial
    evidence supports trial court’s findings].)
    In sum, we do not find this case to present exceptional circumstances to
    warrant the exercise of our discretion to either accept new evidence or make
    independent findings on appeal under Code of Civil Procedure section 909,
    especially to reverse the order under review. We do not perceive that granting
    the motion would end the litigation; rather, accepting the requested new
    evidence would instead allow the case to proceed based on facts never placed
    before the trial court in connection with the issue on review. Safeco did not
    have an opportunity to oppose the new evidence in the trial court; nor did it
    have the chance to address it in its respondent’s brief on appeal. And it would
    be entitled to do so. We accordingly decline to “overrule the trial court’s fact-
    finding responsibility and authority and reinstate litigation where it was a
    party who failed to bring the facts to the trial court’s attention in the first
    instance.” (Bombardier, supra, 216 Cal.App.4th at p. 605.)
    As a corollary of our denial of Glassman’s motions concerning the
    appellate record, we also observe that a party’s brief cannot make arguments
    that rely on facts either outside the record or improperly included within it;
    statements in the briefs based on such matter are disregarded by an
    appellate court. (Kendall v. Allied Investigations, Inc. (1988) 
    197 Cal.App.3d 619
    , 625; Pulver, supra, 182 Cal.App.3d at pp. 631–632.) Glassman’s briefs,
    and also Safeco’s brief in response, cite to matters we decline to include
    within the scope of our review, and we will disregard statements and
    arguments in the briefs that rely on this improper matter for record support.
    26
    II.   The Relevant Statutory Landscape
    Before reaching Glassman’s legal arguments, we first lay out the
    relevant statutory context of her claims.
    A. Insurance Code section 11580.2
    As noted, Insurance Code section 11580.2 is part of the Uninsured
    Motorist Act and sets the parameters of a UIM proceeding. “This law was
    conceived as a ‘temporary solution to the problem of the uninsured’ owner or
    operator of an automobile, who, in spite of the financial responsibility law
    [Veh. Code, § 16000, et seq.], proved to be ‘financially irresponsible’ [citation].
    It has turned out to be a permanent solution—or, at least, a permanent
    partial solution—to this problem. [¶] At its core, in Insurance Code section
    11580.2, the law states that, generally, an automobile liability insurance
    policy that an insurer issues or delivers to an insured owner or operator
    covering damages that a third party shall be legally entitled to recover for
    bodily injury from the insured owner or operator[,] shall also cover damages
    that the insured owner or operator shall be legally entitled to recover for
    bodily injury from an uninsured owner or operator. (Id., subd. (a)(1).) In this
    aspect, its purpose is to require a ‘type of self-protection’ on the part of
    insured owners or operators. [Citations.]” (Mercury Ins. Group v. Superior
    Court (1998) 
    19 Cal.4th 332
    , 341 (Mercury); see also Pilimai, 
    supra,
     39
    Cal.4th at p. 140; Cal. State Automobile Assn. Inter-Insurance Bureau v.
    Carter (1985) 
    164 Cal.App.3d 257
    , 260 (Cal. State) [purpose of UIM law is to
    minimize losses to drivers involved through no fault of their own with
    financially irresponsible and uninsured adverse drivers].)
    In requiring arbitration of specified disputes—whether the insured is
    legally entitled to recover damages, and, if so, the amount—the law’s purpose
    is also “to offer a means of resolving disputes that is more expeditious and
    27
    less expensive than litigation. [Citations.] Its beneficiaries include the
    insurer and the insured, who are each thereby given a right against litigating
    these issues. [Citation.] But they also include the courts themselves, which
    are thereby freed from entertaining such litigation. [Citation.]” (Mercury,
    supra, 19 Cal.4th at p. 342; Pilimai, 
    supra,
     39 Cal.4th at p. 140.)
    Thus, by statute, “[c]overage disputes for underinsured motorists are
    subject to contractual arbitration. (Ins. Code, § 11580.2, subd. (f).) Absent
    language in the insurance agreement expanding the issues to be arbitrated
    [citation], underinsured motorist arbitrations contemplate only two issues—
    ‘whether the insured shall be legally entitled to recover damages, and if so
    entitled, the amount thereof’ ([ibid.]). In this context, the term ‘damages’
    refers to the amount of damages the insured is entitled to recover from the
    underinsured motorist; ‘ “it does not include determination of the extent of
    coverage and the amount of money the insurance company is obligated to pay
    the insured.” ’ [Citations.]” 15 (Storm, supra, 52 Cal.App.5th at p. 643.) But, as
    occurred here, when the arbitrator’s determination is that the damages
    suffered by the insured, so defined, exceed the policy limits available, it is
    sufficient for the arbitrator to make that determination without finding the
    actual total damages that would be owed from the UIM driver to the insured.
    (Cothron, supra, 103 Cal.App.3d at p. 862; see also State Farm, 
    supra,
     123
    Cal.App.4th at pp. 1429–1432 [where insurer paid policy limits before UIM
    15 Issues of bad-faith breach of the insurance contract are beyond the
    scope of the UIM arbitration. (McIsaac, supra, 64 Cal.App.5th at pp. 422–423;
    Corral v. State Farm Mutual Automobile Ins. Co. (1979) 
    92 Cal.App.3d 1004
    ,
    1011 [plaintiff’s bad-faith cause of action not based on facts surrounding auto
    accident nor policy provisions at issue in UIM arbitration].) And, relatedly,
    punitive damages, which have a purpose distinct from UIM proceedings, are
    not available in such proceedings. (Cal. State, supra, 164 Cal.App.3d at pp.
    260–264.)
    28
    arbitration was initiated, there is no controversy left to be arbitrated].) The
    UIM arbitration award, in any event, may not exceed the policy limits.
    (Cothron, at p. 860; State Farm, at p. 1428, fn. 2.)
    As noted, the parties here contracted in the applicable insurance
    policies to arbitrate just the two issues as set out in Insurance Code section
    11580.2, subdivision (f)—the liability of the UIM driver to Glassman and the
    amount of damages she would be entitled to from that party, up to the
    umbrella-policy limits. The scope of their agreement thus did not extend to
    the issue of arbitration costs or prejudgment interest, leaving both these
    issues for resolution, if any, by the superior court.
    Because UIM arbitration is contractual in nature, the parties by
    contract—the applicable policy of insurance—may agree as to the division of
    arbitration costs. This allowance is consistent with Code of Civil Procedure
    section 1284.2, which is part of the California Arbitration Act (Code Civ.
    Proc., § 1280 et seq.) and which provides that absent such agreement, each
    party to an arbitration, including a UIM arbitration, will pay its pro rata
    share of the arbitrator’s fees and expenses and will bear its own other costs
    related to the arbitration proceeding. (Storm, supra, 52 Cal.App.5th at p. 644;
    accord, Austin v. Allstate Ins. Co. (1993) 
    16 Cal.App.4th 1812
    , 1815 (Austin)
    [Code Civ. Proc., § 1284.2 “sets forth the legislative policy of this state that
    arbitration costs are to be borne by the party incurring them, unless the
    arbitration agreement provides otherwise”].)
    But this does not mean the cost-shifting provisions of CCP section 998,
    discussed below, are inapplicable for recovery of costs incurred during the
    UIM arbitration. In fact, as with other kinds of arbitrations, they are. 16
    16Costs incurred during an arbitration are distinguished from those
    incurred in a later judicial proceeding under the California Arbitration Act
    29
    (Pilimai, 
    supra,
     39 Cal.4th at pp. 142, 149–150 [UIM arbitration under Ins.
    Code, § 11580.2 is an arbitration within the meaning of CCP section 998 and
    subject to its cost-shifting provisions]; Storm, supra, 52 Cal.App.5th at pp.
    644–646.) The term “costs” in this sense is distinguished from prejudgment
    interest under section 3287, which is not a cost but is instead an element of
    compensatory damages. (Bodell Construction Co. v. Trustees of California
    State University (1998) 
    62 Cal.App.4th 1508
    , 1525, fn. 14 (Bodell).) Nothing
    in the Uninsured Motorist Act or the California Arbitration Act directly
    addresses the availability of prejudgment interest in UIM proceedings. And
    per Pilimai, section 3291 (providing for prejudgment interest as a cost to a
    plaintiff issuing a prevailing CCP section 998 offer in a personal-injury
    action) does not apply in a UIM proceeding, which is instead in the nature of
    an action arising in contract based on the policy of insurance. (Pilimai, 
    supra,
    39 Cal.4th at pp. 137, 140–141, 146 [action against insurance company to
    recover policy benefits is one for “damages for breach of contract”]; Mercury,
    
    supra,
     19 Cal.4th at p. 342 [though mandated by statute, UIM arbitration is
    a form of contractual arbitration, the contract being an automobile-liability
    insurance policy].)
    In sum, the Uninsured Motorist Act, and specifically Insurance Code
    section 11580.2, does not address the availability of prejudgment interest in
    UIM proceedings, whether expressly allowing or disallowing it. And while the
    (Code Civ. Proc., § 1280, et seq.) In this regard, Code of Civil Procedure
    section 1293.2 provides that “ ‘[t]he court shall award costs upon any judicial
    proceeding under’ ” the [California Arbitration Act] to confirm, correct, or
    vacate an arbitration award. (See Austin, supra, 16 Cal.App.4th at pp. 1815–
    1816 [‘the Legislature has distinguished between costs incurred in an
    arbitration proceeding and costs incurred in superior court to enforce an
    arbitration award’].)” (Storm, supra, 52 Cal.App.5th at p. 644.)
    30
    cost-shifting provisions of CCP section 998, described below, do apply to UIM
    proceedings, such proceedings are not subject to section 3291, under which
    prejudgment interest is treated as a recoverable cost as a consequence of a
    prevailing CCP section 998 offer in a personal-injury action. (Pilimai, supra,
    39 Cal.4th at pp. 145–147.)
    B. CCP Section 998
    CCP section 998 provides that the costs of suit allowed to a prevailing
    party under Code of Civil Procedure sections 1031 and 1032 will be withheld
    or augmented—shifted—as therein specified. At subdivision (b), CCP section
    998 provides that not less than 10 days before trial or arbitration, “any party
    may serve an offer in writing upon any other party to the action to allow
    judgment to be taken or an award to be entered in accordance with the terms
    and conditions stated at that time.” As relevant here, subdivision (d) of CCP
    section 998 provides that “[i]f an offer made by a plaintiff is not accepted and
    the defendant fails to obtain a more favorable judgment or award in any
    action or proceeding other than an eminent domain action, the court or
    arbitrator, in its discretion, may require the defendant to pay a reasonable
    sum to cover postoffer costs of the services of expert witnesses, who are not
    regular employees of any party, actually incurred and reasonably necessary
    in either, or both, preparation for trial or arbitration, or during trial or
    arbitration, of the case by the plaintiff, in addition to plaintiff’s costs.”
    Nothing in CCP section 998 addresses prejudgment interest.
    An offering party who prevails on its offer bears the later burden of
    showing that the offer was “valid” under CCP section 998, meaning compliant
    with the statute and “ ‘sufficiently specific to permit the recipient
    meaningfully to evaluate it and make a reasoned decision whether to accept
    it, or reject it and bear the risk [one] may have to shoulder [the] opponent’s
    31
    litigation costs and expenses. [Citation.]’ ” (MacQuiddy v. Mercedes-Benz
    USA, LLC (2015) 
    233 Cal.App.4th 1036
    , 1050; see Covert v. FCA USA, LLC
    (2022) 
    73 Cal.App.5th 821
    , 833 (Covert).) Validity is determined as of the date
    the offer was served. (Covert, at p. 832.)
    Once the validity of a CCP section 998 offer is established by the
    offeror, the burden then shifts to the offeree to demonstrate that the offer was
    unreasonable or not made in good faith. (Covert, supra, 73 Cal.App.5th at
    p. 833.) If the actual judgment is more favorable to the offeror than was the
    offer, it is prima facie evidence of the offer’s reasonableness. (Id. at pp. 833–
    834.) Whether an offer is made in good faith is based on whether, at the time
    it was made, it carried a reasonable prospect of acceptance by the offeree. (Id.
    at p. 834.) The court inquires: “ ‘First, was the [CCP section] 998 offer within
    the “range of reasonably possible results” at trial, considering all of the
    information the offeror knew or reasonably should have known? [Citation.]
    Second, did the offeror know that the offeree had sufficient information,
    based on what the offeree knew or reasonably should have known, to assess
    whether the “offer [was] a reasonable one,” such that the offeree had a “fair
    opportunity to intelligently evaluate the offer”?’ [Citations.]” (Id. at p. 834.)
    “The purpose of [CCP] section 998 is to “ ‘encourage settlement by
    providing a strong financial disincentive to a party—whether it be a plaintiff
    or a defendant—who fails to achieve a better result than that party could
    have achieved by accepting his or her opponent’s settlement offer. (This is the
    stick. The carrot is that by awarding costs to the putative settler the statute
    provides a financial incentive to make reasonable settlement offers.)” ’
    [Citation.]” (Pilimai, supra, 39 Cal.4th at p. 139.)
    As noted, CCP section 998 and its cost-shifting provisions apply to UIM
    arbitrations, and the “ ‘maximum liability’ provision of Insurance Code
    32
    section 11580.2, subdivision (p)(4) does not preclude recovery of costs under”
    CCP section 998, which “added to the arbitration award, exceed the coverage
    limits.” (Pilimai, 
    supra,
     39 Cal.4th at pp. 137; see 
    id.
     at pp. 144–145.) This is
    because the obligation to pay costs under CCP section 998 does not arise in a
    UIM proceeding from the policy of insurance, and is thus not limited by it,
    but instead from CCP section 998 itself, which imposes an obligation to pay
    costs “arising out of [a party’s] behavior as a litigant.” (Pilimai, 
    supra,
     39
    Cal.4th at p. 144; see also id. at p. 145.) As CCP section 998 does not address
    prejudgment interest—not a cost under section 3287(a) but an element of
    damages—the obligation rooted in CCP section 998 to pay costs that arises
    out of a party’s “behavior as a litigant” (id. at p. 144) does not extend to
    prejudgment interest claimed under section 3287(a).
    C. Section 3287(a)
    Section 3287(a) “allows a person to recover prejudgment interest on
    ‘damages certain, or capable of being made certain by calculation[,]’ from the
    day such damages are certain or capable of being made certain. ‘[T]he court
    has no discretion, but must award prejudgment interest upon request, from
    the day there exists both a breach and a liquidated claim.’ (North Oakland[,
    supra, 65 Cal.App.4th at p.] 828.) Prejudgment interest [under section
    3287(a)] is an element of damages, not a cost. (Id. at p. 830.)” (Warren v. Kia
    Motors America, Inc. (2018) 
    30 Cal.App.5th 24
    , 34, fn. omitted (Warren);
    Watson Bowman Acme Corp. v. RGW Construction, Inc. (2016) 
    2 Cal.App.5th 279
    , 293 (Watson) [trial court has no discretion under section 3287(a) and
    must award prejudgment interest from the first day there exists both a
    breach and a liquidated claim]; Bodell, supra, 62 Cal.App.4th at p. 1525 & fn.
    14 [prejudgment interest awarded under section 3291 and CCP section 998 is
    a recoverable cost, whereas interest under section 3287 is a form of
    33
    compensatory damages].) But it may be claimed on a post-trial motion and
    need not be submitted to a jury as trier of fact. (North Oakland, supra, 65
    Cal.App.4th at pp. 830–831.)
    “ ‘ “ ‘Damages are deemed certain or capable of being made certain
    within the provisions of [section 3287(a)] where there is essentially no
    dispute between the parties concerning the basis of computation of
    damages[,] if any are recoverable[,] but whether their dispute centers on the
    issue of liability giving rise to damage.’ [Citation.]” [Citation.] Thus, “ ‘ “[t]he
    test for recovery of prejudgment interest under [section 3287(a)] is whether
    defendant actually know[s] the amount owed or from reasonably available
    information could the defendant have computed that amount. [Citation.]”
    [Citations.] “The statute . . . does not authorize prejudgment interest where
    the amount of damage, as opposed to the determination of liability, ‘depends
    upon a judicial determination based on conflicting evidence and it is not
    ascertainable from truthful data supplied by then claimant to [their] debtor.’
    [Citations.]” [Citation.] Thus, where the amount of damages cannot be
    resolved except by verdict or judgment, prejudgment interest is not
    appropriate. [Citation.]’ [Citation.]” [Citations.]’ [Citation.]” (Warren, supra,
    30 Cal.App.5th at p. 44, italics added; see Olson v. Cory (1983) 
    35 Cal.3d 390
    ,
    402 [the certainty required of section 3287(a) is absent when the amounts
    due turn on disputed facts, but not when the dispute is confined to the rules
    governing liability].)
    Further, prejudgment interest under section 3287(a) is not authorized
    when there is a factual dispute as to the particular day preceding verdict or
    judgment from which interest on a liquidated sum would accrue. (Happolt v.
    Guardian Life Ins. Co. of America (1949) 
    90 Cal.App.2d 386
    , 405 [trial court
    erred in awarding prejudgment interest from date plaintiff served a claim on
    34
    defendant carrier under accidental-death policy as there was no evidence
    showing when insured notified carrier that death was accidental, a condition
    for payment on the claim]; see Cox v. McLaughlin (1881) 
    76 Cal. 60
    , 70
    [affirming denial of prejudgment interest where plaintiff’s services and
    material furnished by him were uncertain as to amount, character, value,
    and time of payment, until fixed by verdict or findings of the court].)
    “[T]he general rule is that damages are unascertainable if the[ir]
    amount . . . depends on disputed facts or the available factual information is
    insufficient to determine the amount; and damages are ascertainable if the
    only impediment to the determination of the amount is a legal dispute
    concerning liability or the measure of damages.” (Collins, supra, v. 205
    Cal.App.4th at p. 151.) “A claim that damages [are] $0 is not a dispute which
    renders the amount of damages uncertain; it is effectively an argument for no
    liability. A defendant’s denial of liability does not make damages uncertain
    for purposes of” section 3287(a). (Los Angeles Unified School District v. Torres
    Construction Co. (2020) 
    57 Cal.App.5th 480
    , 508, fn. omitted.) In insurance
    cases involving multiple carriers disputing allocation of loss, the pivot point
    for ascertaining certainty has been described not as a dispute on liability
    versus one on damages but as one “between legal issues and factual issues—
    i.e., a dispute over a factual issue precludes certainty, but a dispute over a
    legal issue does not.” (State of California v. Continental Ins. Co. (2017) 
    15 Cal.App.5th 1017
    , 1038 (Continental); see id. at p. 1039, citing Collins, supra,
    205 Cal.App.4th at p. 152; see also Benson v. City of Los Angeles (1963) 
    60 Cal.2d 355
    , 366, superseded by statute on another ground as stated in In re
    Marriage of Powers (1990) 
    218 Cal.App.3d 626
    , 636.)
    There are two competing policy considerations behind section 3287(a).
    On the one hand, the law requires that a claim be liquidated so a party
    35
    cannot be in default for the failure to know what sum to pay. On the other
    hand, the law recognizes that injured parties should be compensated for the
    loss of use of their money from the date of the injury, a policy that “has been
    implemented through a generally liberal construction of ‘certainty’ under
    section 3287. [Citation.]” (Chesapeake Industries, Inc. v. Togova Enterprises,
    Inc. (1983) 
    149 Cal.App.3d 901
    , 907 (Chesapeake); see also Lakin v. Watkins
    Associated Industries (1993) 
    6 Cal.4th 644
    , 663 (Lakin); Flethez v. San
    Bernardino County Employees Retirement Assn. (2017) 
    2 Cal.5th 630
    , 643
    (Flethez); Continental, supra, 15 Cal.App.5th at p. 1038.) These competing
    policy considerations have led “courts to focus on the defendant’s knowledge
    about the amount of the plaintiff’s claim. The fact that the plaintiff or some
    omniscient third party knew or could calculate the amount is not sufficient.
    The test . . . is: did the defendant actually know the amount owed or from
    reasonably available information could the defendant have computed that
    amount. Only if one of those two conditions is met should the court award
    prejudgment interest [under section 3287(a)]. [Citations.]” (Chesapeake,
    supra, 149 Cal.App.3d at p. 907, 2nd italics added; see also Watson, supra, 2
    Cal.App.5th at pp. 293–294.)
    The defendant’s or debtor’s state of actual knowledge of the amount due
    to the plaintiff or creditor, or ability to calculate that amount from
    information that is reasonably available, is thus key to the determination in a
    particular case as to whether damages are certain or capable of being made
    certain as of a particular day to entitle the plaintiff to prejudgment interest
    under section 3287(a). “Pursuant to the statute, if a defendant does not know
    or cannot readily ascertain damages, it is incumbent on the plaintiff to
    provide the defendant with some statement and supporting data from which
    the defendant can make the necessary determination. [Citation.] The fact
    36
    that the amount of the damages is in dispute is relevant only insofar as the
    dispute produces conflicting evidence from which the amount of damages
    cannot be ascertained with certainty. [Citation.] When . . . the amount of the
    damages is not in dispute, the lack of a dispute is merely a factor to be
    considered in the determination of whether the damages met the statutory
    requirement of certainty or capab[ility] of being made certain for fixing
    prejudgment interest. [Citation.]” (Levy-Zentner Co. v. Southern Pacific
    Transportation Co. (1977) 
    74 Cal.App.3d 762
    , 798–799 (Levy-Zentner).)
    Thus, unlike section 3291, which makes prejudgment interest available
    to a plaintiff with a prevailing CCP section 998 offer in a personal-injury
    action, eligibility for prejudgment interest under section 3287(a) is not a
    matter of making a “simple comparison” between the judgment and the
    statutory offer to compromise. (Lakin, supra, 6 Cal.4th at pp. 662–663, fn. 13
    [eligibility for interest under § 3291 is predicated on “simple comparison”
    between the judgment, including all the damages, and the CCP section 998
    offer]; Steinfeld, supra, 60 Cal.App.4th at pp. 17–18.) The test is rather
    whether the amount of the claimant’s damages was certain, or capable being
    made certain. In this regard, “uncertainty over the amount of damages”
    should not be confused with “uncertainty as to whether there is liability for
    damages in an amount that is certain.” (Cheema v. L.S. Trucking, Inc. (2019)
    
    39 Cal.App.5th 1142
    , 1151.)
    Unlike section 3291, applicable only in personal-injury actions and
    expressly tied to CCP section 998; or section 3288, applicable “in an action for
    the breach of an obligation not arising from contract, and in every case of
    oppression, fraud or malice;” or the discretionary section 3287, subdivision
    (b), applicable to actions for unliquidated damages in contract, mandated
    prejudgment interest under section 3287(a) for liquidated claims is not
    37
    expressly limited to certain types of actions. Instead, it “applies by its terms
    without restriction to ‘[e]very person who is entitled to recover damages.’ ”
    (Levy-Zenter, supra, 74 Cal.App.3d at p. 796, italics omitted.)
    For example, section 3287(a) has been applied to allow the recovery of
    prejudgment interest in actions arising in mandamus, for the destruction of
    real property, and in inverse condemnation. (Levy-Zenter, supra, 74
    Cal.App.3d at pp. 796–798.) It does not apply to actions under the unfair
    competition law (Bus. & Prof. Code, § 17200), which are for injunctive relief
    and restitution, not damages. (Espejo, supra, 13 Cal.App.5th at p. 375 [but
    discretionary interest may be awarded in equity as a component of
    restitution].) Nor does it apply in an action for wrongfully withheld wages or
    business expenses, where a discretionary and equitable award of
    prejudgment interest is available to make an injured party whole. (Id. at pp.
    375–376.) Or to a valuation of corporate shares under the statutory buyout
    provisions of Corporations Code section 2000, as a corporation’s election to
    pay the fair value of shares is not equivalent to the dissolution-seeking
    shareholder receiving “damages” for a detriment suffered, as damages are
    defined in section 3281, nor was it a sum the corporation is obligated to pay. 17
    (Crane R.R. Crane Investment Corp. (2022) 
    82 Cal.App.5th 748
    , 759–761
    (Crane).)
    17 Section 3281 “ ‘defines “damages” as monetary compensation for one
    “who suffers detriment from the unlawful act or omission of another.” ’
    (Flethez, 
    supra,
     2 Cal.5th at p. 635, fn. 2, quoting § 3281 [‘[e]very person who
    suffers detriment from the unlawful act or omission of another, may recover
    from the person in fault a compensation therefor in money, which is called
    damages’].)” (Crane, supra, 82 Cal.App.5th at p. 759.) “Under specified
    conditions, an award of damages [as defined by section 3281] may include an
    award of prejudgment interest” under section 3287(a). (Flethez, 
    supra,
     2
    Cal.5th at p. 635, fn. 2.)
    38
    Our Supreme Court, in fact, has rejected the notion that section
    3287(a)’s application is limited by the nature of the plaintiff’s claim and has
    instead held that it provides for the general availability of interest if its
    conditions are met; nor is it a barrier to an award of prejudgment interest
    under section 3287(a) that such relief is not specifically authorized by a
    statute underlying the plaintiff’s claims. (Tripp v. Swoap (1976) 
    17 Cal.3d 671
    , 681–682 [prejudgment interest under section 3287(a) available in
    mandate case, as there was an underlying monetary obligation, recovery was
    certain or capable of being made certain by calculation, and right to recovery
    vested on a particular day], overruled on other grounds in Frink v. Prod
    (1982) 
    31 Cal.3d 166
    , 180; Mass v. Board of Education (1964) 
    61 Cal.2d 612
    ,
    626 [section 3287(a) reaches actions in mandate brought to recover sums of
    money owing as a statutory obligation]; Currie v. Workers’ Compensation
    Appeals Board (2001) 
    24 Cal.4th 1109
    , 1115–1117 [section 3287(a) applies to
    backpay awards made under Lab. Code, § 132a]; see Flethez, 
    supra,
     2 Cal.5th
    at pp. 641–642 [collection of wage, benefit, and labor cases to which
    section 3287(a) found to apply]; see also Levy-Zentner, supra, 74 Cal.App.3d
    at pp. 796–797.)
    Thus, “ ‘the key distinguishing factor’ ” for determining section
    3287(a)’s application is not, for example, “ ‘whether the cause of action arose
    in tort or contract, but rather whether the damages [are] readily
    ascertainable.’ ” (Wisper Corp. v. California Commerce Bank (1996) 
    49 Cal.App.4th 948
    , 958; Levy-Zentner, supra, 74 Cal.App.3d at p. 795.)
    Finally, as noted, prejudgment interest under section 3287(a) is
    generally available in matters subject to contractual arbitration, even if only
    from the date of the final award, which itself becomes a new contractual
    obligation or fixed liability regardless of the individual elements that
    39
    comprised that liability, to entry of judgment. (Tenzera, Inc. v. Osterman
    (2012) 
    205 Cal.App.4th 16
    , 21–23 (Tenzera); County of Solano v. Lionsgate
    Corp. (2005) 
    126 Cal.App.4th 741
    , 753 (County of Solano); Britz, Inc. v. Alfa-
    Lava Food & Dairy Co. (1995) 
    34 Cal.App.4th 1085
    , 1106–1107 (Britz);
    Pierotti v. Iorian (2000) 
    81 Cal.App.4th 17
    , 27 (Pierotti).)
    III.   Neither Section 3287(a) Nor CCP Section 998, Separately or
    Together, Provide for Prejudgment Interest in a UIM Proceeding
    Premised on an Insured’s Prevailing CCP Section 998 Offer
    In her briefing, below and on appeal, Glassman appears to assert that
    without any other showing to establish the certainty of the amount of
    damages in a particular case, section 3287(a) and CCP section 998 operate
    together to provide for recovery of prejudgment interest to an insured who
    makes a prevailing CCP section 998 offer in a UIM proceeding, from the date
    of the offer. This is because, she argues, such an offer, seemingly by itself, “is
    an appropriate mechanism to liquidate a contractual UIM claim” and thereby
    establish a right to mandatory prejudgment interest under section 3287(a).
    Stated differently, her asserted position is that her CCP section 998 offer, on
    its own, “served to establish the sum certain and date certain for purposes of
    her claim for prejudgment interest under [section 3287(a)]” and it “set a
    statutory deadline for avoiding established [prejudgment interest]
    repercussions.” 18
    18Glassman also appears to retreat from this purely statutory
    argument by then coupling it with contentions about the sufficiency of the
    record here to establish the certainty of the amount of her damages and the
    date they became certain. In this regard, she states that she “does not seek a
    simple comparison between the [CCP s]ection 998 offer and the arbitrator’s
    award in this case. Rather, [she] seeks application of [CCP s]ection 998 as a
    mechanism to establish certainty under . . . section 3287[(a)] based on the
    record in this case.” (Italics added.) She further states that she “does not
    40
    As we read this contention, it is purely one of law involving statutory
    interpretation or construction and divorced from any disputed factual
    question. To such a claim, we apply independent review. (California Building
    Industry Assn. v. State Water Resources Control Board (2018) 
    4 Cal.5th 1032
    ,
    1041.) “Our primary task ‘in interpreting a statute is to determine the
    Legislature’s intent, giving effect to the law’s purpose. [Citation.] We consider
    first the words of a statute, as the most reliable indicator of legislative intent.
    [Citation.]’ [Citation.]” (Ibid.)
    We reject as lacking a legal basis the claim that section 3287(a) and
    CCP section 998 can be read, separately or together, to provide that a
    successful CCP section 998 offer sufficiently liquidates a claim for damages
    and establishes their certainty in a UIM proceeding for purposes of
    mandating an award of prejudgment interest as under section 3287(a).
    Neither statute provides for this, nor references the other. Their respective
    subject matter and purposes are different. And we find no authority to
    support the claim, particularly to the extent the argument would displace
    argue that the reasonableness of the [CCP s]ection 998 offer established that
    [her] damages were certain. Rather, [her] position is that the policy-limit
    [CCP s]ection 998 offer liquidated [her] claim and Safeco had sufficient
    information at that time to calculate [her] damages up to its liquidated
    maximum liability of $1,000,000.” (Italics added.) And that she “does not
    argue that her damages were certain because the [CCP s]ection 998 offer was
    reasonable and in good faith. Rather, [her] position is that the [CCP s]ection
    998 policy-limit offer liquidated [her] policy-limit claim for contractual UIM
    benefits. At the time of the [CCP s]ection 998 offer, Safeco had sufficient
    information to calculate [her] damages, warranting an award of prejudgment
    interest under” section 3287(a). (Italics added.)
    For the sake of completeness, we address the purely statutory
    argument first, and then proceed to the alternative argument that invokes
    the record in this case for support.
    41
    existing law on assessing the certainty of damages for purposes of mandatory
    prejudgment interest under 3287(a).
    First, there is no express statutory language in either section 3287(a) or
    CCP section 998 to suggest that these two provisions operate at all in
    tandem, in UIM proceedings or otherwise. And we have no legislative
    authority to make them do so. The Legislature showed that it knew how to tie
    prejudgment interest to the cost-shifting features of CCP section 998 when it
    wanted to, as it expressly did in section 3291 but did not in section 3287(a). “
    ‘Where the Legislature makes express statutory distinctions, we must
    presume it did so deliberately, giving effect to the distinctions, unless the
    whole scheme reveals the distinction is unintended. This concept merely
    restates [a] statutory[-]construction canon: we presume the Legislature
    intended everything in a statutory scheme, and we should not read statutes
    to omit expressed language or include omitted language. As our Supreme
    Court stated, we “are aware of no authority that supports the notion of
    legislation by accident.” [Citation.]’ [Citation.]” (Yao v. Superior Court (2002)
    
    104 Cal.App.4th 327
    , 333.) Based solely on the language of section 3287(a)
    and CCP section 998—two independent statutes—there is no legal basis for a
    court to read or bind them together in their application.
    Second, the purpose of CCP section 998’s cost-shifting features is
    purely to promote the legislative policy of encouraging settlement. Unrelated
    to this policy, section 3287(a) is a means to compensate a plaintiff for lost use
    of funds with prejudgment interest when damages were ascertainable to a
    defendant with sufficient certainty. In this, prejudgment interest under
    section 3287(a) is a component of damages; it is not a cost, nor is it treated as
    such or similarly as an obligation “arising out of [a party’s] behavior as a
    litigant.” (Pilimai, 
    supra,
     39 Cal.4th at p. 144; see also id. at p. 145; Bodell,
    42
    supra, 62 Cal.App.4th at p. 1525, fn. 14; Warren, supra, 30 Cal.App.5th at p.
    34.)
    Third, Glassman offers no legal authority or support for us to read
    section 3287(a) and CCP section 998 together as she urges. Contrary to her
    suggestion, neither the Supreme Court’s holding in Pilimai (that section 3291
    does not apply in UIM proceedings) nor in Gourley v. State Farm Mutual
    Automobile Ins. Co. (1991) 
    53 Cal.3d 121
    , 123–124 (that section 3291 does
    apply in insurance bad-faith actions or those for breach of the covenant of
    good faith and fair dealing) open the door to the result she seeks. Neither
    case’s holding even touches on section 3287(a), and these authorities do not
    “invite” us to effectively substitute section 3287(a) for the inapplicable section
    3291 in a UIM proceeding by attributing to a prevailing CCP section 998 offer
    in such a proceeding the power or proxy to liquidate damages as required by
    section 3287(a).
    IV.   There Was a Void of Evidence Before the Trial Court Showing
    That Glassman’s Damages Were Certain or Capable of Being
    Made Certain Under Section 3287(a) on the Date She Made Her
    CCP Section 998 Offer
    As framed by Glassman, the issue in this case is: “Under what
    circumstances does a policyholder’s [CCP section 998 offer] serve as a
    mechanism to establish the requisite certainty for an award of prejudgment
    interest [under section 3287(a)] in UIM proceedings?” To the extent she
    contends that such an offer alone effectively liquidates the claim as a matter
    of law—by application of section 3287(a) and CCP section 998 together—to
    mandate an award of prejudgment interest from the date of the offer, we
    have rejected the claim. But, as noted, Glassman also contends that the
    undisputed record in this case otherwise shows that her damages were
    43
    certain or capable of being made certain as of the date of her CCP section 998
    offer, in February 2020.
    “ ‘ “On appeal, we independently determine whether damages were
    ascertainable for purposes of [section 3287(a)] absent a factual dispute as to
    what information was known or available to the defendant at the time”
    [citation].’ [Citation.]” (Continental, supra, 15 Cal.App.5th at p. 1038; accord,
    Collins, supra, 205 Cal.App.4th at p. 151.) On the record before the trial court
    here as it considered and denied prejudgment interest—our appellate record
    properly delineated—there were no facts from which it could be determined
    just what information on the amount of Glassman’s damages—general or
    special—was known or reasonably available to Safeco when she made her
    CCP section 998 offer roughly a year before the arbitration hearing. And in
    the absence of any evidence on the point, we are unable to determine whether
    there is a true factual dispute.
    A party seeking an award of prejudgment interest, at least under
    section 3291, bears the burden of proving entitlement thereto. (Lakin, 
    supra,
    6 Cal.4th at pp. 659–661.) At bottom, this stems from Evidence Code section
    500, which provides that “[e]xcept as otherwise provided by law, a party has
    the burden of proof as to each fact the existence or nonexistence of which is
    essential to the claim for relief or defense that [the party] is asserting.” We
    see no reason why this allocation of the burden of proof would not likewise
    apply to prejudgment interest under section 3287(a), especially as it is a
    component of compensatory damages as to which a plaintiff normally bears
    the burden of proof.
    As we have thoroughly outlined, for a plaintiff’s damages to be deemed
    certain or capable of being made certain on a particular day to mandate
    prejudgment interest under section 3287(a), the defendant must actually
    44
    know the amount or must have been able to compute it on the particular day
    from reasonably available information. (Warren, supra, 30 Cal.5th at p. 44;
    Collins, supra, 205 Cal.App.4th at pp. 150–151; Cassinos, supra, 14
    Cal.App.4th at p. 1789.) The trial court here concluded that especially with
    Glassman’s general damages for emotional distress, the total amount of her
    damages was not certain or capable of being made certain under section
    3287(a) when she made her CCP section 998 offer. Glassman faults this
    conclusion, contending that her special damages alone, apart from her then
    undetermined general emotional-distress damages, exceeded the umbrella-
    policy limits when she made her CCP section 998 offer, and that Safeco then
    knew this, mandating an award of prejudgment interest from the offer date
    based on the umbrella-policy limits. That might be so, but it was not shown
    on this record based on the evidence before the trial court when it made its
    ruling.
    Then before the court were Glassman’s three declarations—the initial
    one filed with her petition, which said nothing bearing on the subject of
    prejudgment interest under section 3287(a); the amended one that added
    only the fact of her having made her CCP section 998 offer in February 2020;
    and her supplemental one, which contained no further facts of relevance to
    the issue. Glassman now contends that the final arbitration award rendered
    in May 2021, which is in the record, contains enough to show that Safeco
    knew in February 2020 when she made her offer to compromise that the
    undisputed amount of her special damages attributable to the accident alone
    exceeded the $1 million policy limits such that mandatory prejudgment
    interest is recoverable from that date under section 3287(a). This is not the
    case. She further contends that the “information available to Safeco at the
    45
    time of the [CCP s]ection 998 offer was the same evidence relied upon by the
    arbitrator . . . .” The record does not show this either.
    Although the arbitrator’s final award discussed the united opinions of
    various doctors on the extent and cause of Glassman’s injuries and cited to
    her medical records in this regard, it is not evident from the award itself that
    these conclusions were derived solely from medical records available to Safeco
    in February 2020.
    Rather, the arbitrator’s conclusions appear to have been reached, at
    least in part, through medical testimony given at the arbitration hearing in
    January 2021. One cannot infer from the award alone that Safeco knew the
    amount of Glassman’s special damages attributable to the accident in
    February 2020, and knew they were enough ($1,505,000) to trigger a policy-
    limits award in her favor. The arbitration award itself did not specifically
    quantify Glassman’s special damages, instead determining only that her
    “monetary expenses” were “well over $1 million, a large part of which were
    covered by insurance,” or, adding lost wages and future treatment, “well
    over” $1,374,129. The arbitrator’s award discusses what appears to be the
    oral testimony of medical experts opining in January 2021 on Glassman’s
    damages based on their having reviewed her medical records before giving
    their respective opinions. But one cannot tell what of these records had been
    produced to Safeco in discovery by February 2020. The arbitrator’s discussion
    on this includes reference to the opinion of Safeco’s retained IME doctor who
    apparently produced a report in January 2020, not in the record, which
    Glassman urges rendered her special damages undisputed and liquidated.
    But it is not apparent from the arbitration award itself just what records this
    doctor reviewed to reach her conclusions in January 2020 on the extent and
    cause of Glassman’s injuries and special damages. And it cannot be said from
    46
    the award alone that Safeco knew then that there was and would be no
    conflicting evidence on the extent and cause of Glassman’s special damages.
    Thus, the arbitrator’s conclusions about the extent of Glassman’s recoverable
    special damages and their cause may well have come from testimony elicited
    in the hearing itself, even with respect to the IME doctor, who testified in the
    arbitration hearing. There is also the Howell issue—unaddressed by the
    arbitrator—which arguably would have limited the quantification of
    Glassman’s compensable damages for medical expenses to the lesser of the
    amount paid or incurred for medical services and the reasonable value of the
    services. (Howell, supra, 52 Cal.4th at p. 556.)
    Glassman implicitly acknowledges the evidentiary void in the record by
    her efforts to augment it and her request for our independent factual finding
    that Safeco “possessed sufficient information to calculate [her] damages up to
    the $1 million policy limit at the time of” her CCP section 998 offer in
    February 2020. On the existing appellate record, properly scoped, there was
    no evidence before the trial court as it considered prejudgment interest from
    which it could have concluded that Safeco did indeed possess such
    information in February 2020 to mandate an award of prejudgment interest
    from the date of Glassman’s CCP section 998 offer. And the arbitration award
    rendered in May 2021 does not illuminate the issue of the state of Safeco’s
    knowledge or possession of all the relevant information in February 2020.
    Without that evidence, and based on our independent review applying
    well-established law on assessing the certainty of damages, there is no
    factual or evidentiary basis on which to reverse the trial court’s denial of
    prejudgment interest under section 3287(a) from the date of Glassman’s CCP
    section 998 offer in February 2020. There is no evidence in the record that
    Safeco then knew or had reasonable access to information from which it could
    47
    have concluded with sufficient certainty that the amount of Glassman’s
    damages, especially her special damages, were enough to trigger a $1 million
    policy-limits award. (Warren, supra, 30 Cal.App.5th at p. 44; Chesapeake,
    supra, 149 Cal.App.3d at p. 907.)
    V.    Even if Prejudgment Interest Under Section 3287 is Available in
    UIM Proceedings From the Date of the Final Arbitration Award,
    Glassman Forfeited This Claim
    As noted, Glassman’s petition to confirm the arbitration award
    generally prayed for “interest on the [a]ward from the date of the [a]ward to
    the date of judgment,” for “recoverable costs and interest,” and for “such other
    and further relief as the Court may deem proper.” This was sufficient to
    support a request for prejudgment interest in the trial court under section
    3287(a). (North Oakland, supra, 65 Cal.App.4th at p. 829.) But in pursuit of
    her request for interest in the trial court, Glassman maintained throughout
    that her damages were certain or capable of being made certain either as of
    the date of her CCP section 998 offer in February 2020, or the date the offer
    expired in March 2020. She never articulated or argued an alternative
    request for prejudgment interest under section 3287(a) from the date of the
    arbitration award in May 2021, as she now does for the first time in her
    opening brief on appeal. And the trial court never made a ruling on
    prejudgment interest running from the date of the arbitration award. We
    accordingly view the alternative theory of relief as effectively abandoned in
    the trial court and forfeited on appeal.
    A successful party to an arbitration may be entitled to post-award,
    prejudgment interest under section 3287(a). (Britz, supra, 34 Cal.App.4th at
    pp. 1106–1107; Pierotti, supra, 81 Cal.App.4th at p. 27 [interest awarded on
    “certain” arbitration award from date of award]; Tenzera, supra, 205
    48
    Cal.App.4th at pp. 21–22.) This is because the arbitration award itself can
    result in a new and fixed liability for which prejudgment interest under
    section 3287(a) is available. (Pierotti, at p. 27.) Accordingly, the successful
    party may be entitled to “recover damages certain” within the meaning of
    section 3287(a), further entitling the party to prejudgment interest on the
    amount of the award from the date the arbitrator renders it until the date of
    judgment confirming the award. (County of Solano, supra, 126 Cal.App.4th at
    pp. 752–754.) This theory thus rests on the award itself as liquidating the
    damages certain for purpose of prejudgment interest under section 3287(a).
    Safeco objects to Glassman’s request for prejudgment interest from the
    date of the arbitration award on several bases, including that no such request
    was pursued in the trial court; that “damages” may not exceed the policy
    limits in a UIM proceeding and those limits have been exhausted here; and
    that prejudgment interest under section 3287 is not available as a form of
    damages in UIM proceedings in any event. 19
    19  Safeco made this latter argument below and maintains it on appeal.
    The argument is rooted in the definition of damages in section 3281 and the
    contention that a claim for compensatory damages must meet this definition
    to bear prejudgment interest as an additional component of damages. (See
    e.g., Flethez, 
    supra,
     2 Cal.5th at p. 635, fn. 2; Crane, supra, 82 Cal.App.5th at
    p. 759 [elective corporate buyout provisions under Corp. Code, § 2000 do not
    give rise to damages as defined in section 3281, so no prejudgment interest
    under section 3287(a) is awardable on the fair-value amount].) Safeco urges
    that a recovery by an insured in a UIM proceeding is not “damages” within
    the statutory definition. Instead, such recovery is as defined by and provided
    in the applicable policy of insurance and as addressed in Insurance Code
    section 11580.2. The arbitration award, as Safeco characterized it, “reflects
    the amount of policy benefits payable for damages caused by a third party
    (the underinsured driver), pursuant to a contractually agreed-upon procedure
    to determine the amount recoverable.” The trial court did not specifically
    address the argument, deciding instead that Glassman’s damages were not
    certain or capable of being made certain without determining the more
    49
    Although prejudgment interest from a later date—that of the
    arbitration award—might be said to be encompassed within an alternative
    request to a prior date, the theory of recovery for the respective dates is
    different here. Glassman’s new alternative request is not tied to her CCP
    section 998 offer. Safeco had no real opportunity to address, nor did the trial
    court have an opportunity to rule on, a request for prejudgment interest
    under section 3287(a) in this UIM action from the date of the arbitration
    award. Thus, the trial court never ruled on Safeco’s foundational legal
    arguments against the application of section 3287(a) in the UIM context, as
    summarized above. Further, Glassman does not tell us what rate of interest
    she seeks and, as we see it, there are issues of fact surrounding when the
    accrual of interest would cease—when Safeco first tendered the $1 million
    policy limits or when it later did so without conditions. Thus, we are being
    asked to rule on the request in the first instance and the issue, as presented
    here, is not purely one of law on undisputed facts.
    “ ‘As a general rule, theories not raised in the trial court cannot be
    asserted for the first time on appeal; appealing parties must adhere to the
    theory (or theories) on which their cases were [decided]. This rule is based on
    fairness—it would be unfair, both to the trial court and the opposing
    litigants, to permit a change of theory on appeal . . . .’ [Citation.] ‘New
    theories of defense, just like new theories of liability, may not be asserted for
    the first time on appeal.’ [Citation.] ‘ “Appellate courts are loathe to reverse a
    foundational question whether prejudgment interest under section 3287 is
    available at all in a UIM proceeding. As we otherwise find no basis to reverse
    the trial court’s decision, we likewise need not reach the question and leave
    for another day whether prejudgment interest under section 3287 as a
    component of compensatory damages is recoverable at all in a UIM
    proceeding, and, if so, whether such interest may exceed the policy-limits cap.
    50
    judgment on grounds that the opposing party did not have an opportunity to
    argue and the trial court did not have an opportunity to consider. . . . Bait
    and switch on appeal not only subjects the parties to avoidable expense, but
    also wreaks havoc on a judicial system too burdened to re[consider] cases on
    theories that could have been raised earlier. [Citation.]” (Nellie Gail Ranch
    Owners Assn. v. McMullin (2016) 
    4 Cal.App.5th 982
    , 997.) This rule extends
    to a new theory of damages; a party cannot assert one measure of damages in
    the trial court and another measure on appeal. (Kantlehner v. Bisceglia
    (1951) 
    102 Cal.App.2d 1
    , 6.) But the rule is relaxed in a reviewing court’s
    discretion when a new theory pertains only to questions of law on undisputed
    facts, which could not be altered by the presentation of additional evidence.
    (Greenwich S.F., LLC v. Wong (2010) 
    190 Cal.App.4th 739
    , 767; Marriage of
    Priem (2013) 
    214 Cal.App.4th 505
    , 510-511.)
    Apart from but related to the rule against a change in theory on appeal
    is the rule that parties will be held to an implied waiver of an issue on appeal
    where the error was never asserted in the trial court. Appellate courts will
    not reverse for procedural defects or erroneous rulings that could have been
    but were not raised below. (Doers, supra, 23 Cal.3d at pp. 184–185; Shaw v.
    County of Santa Cruz (2008) 
    170 Cal.App.4th 229
    , 285–286 [court will not
    consider claims of error on appeal that could have been, but were not,
    pursued below and forfeiture may result from inaction falling short of express
    waiver that demonstrates acquiescence in the error].) This again is rooted in
    the notion that it is unfair to the trial judge and the adverse party to take
    advantage of an alleged error on appeal where it could have easily been
    corrected in the trial court. (Doers, at p. 184, fn. 1; Children’s Hospital &
    Medical Ctr. v. Bonta (2002) 
    97 Cal.App.4th 740
    , 776–777.) The rule is
    justified as an invocation of the invited-error doctrine and implied waiver of
    51
    the new theory in the trial court by the appellant. (Planned Protective
    Services v. Gorton (1988) 
    200 Cal.App.3d 1
    , 12–13, disapproved on another
    ground in Martin v. Szeto (2004) 
    32 Cal.4th 445
    , 451, fn. 7; but see Pierotti,
    supra, 81 Cal.App.4th at p. 28 [no implied waiver where appellant asserted
    additional and alternative grounds in trial court for the prejudgment interest
    sought].)
    We conclude that by never expressly articulating a request for
    prejudgment interest in the trial court under section 3287(a) from the date of
    the final arbitration award, even as an alternative theory, Glassman has
    forfeited the claim, which in any event involves more than a simple
    calculation from undisputed factual information contained within the
    properly delineated record.
    DISPOSITION
    The judgment is affirmed. Respondent Safeco is entitled to costs on
    appeal by operation of California Rules of Court, rule 8.278(a)(1) and (2).
    52
    ____________________________
    WILLIAMS, J. ∗
    WE CONCUR:
    ____________________________
    GROVER, ACTING P.J.
    _____________________________
    LIE, J.
    Glassman v. Safeco Insurance Company of America
    H049825
    ∗
    Judge of the Santa Clara County Superior Court, assigned by the
    Chief Justice pursuant to article VI, section 6 of the California Constitution.
    Trial Court:                             Santa Clara County Superior Court
    Superior Court No.: 21CV383782
    Trial Judge:                             The Honorable Peter H. Kirwan
    Attorneys for Plaintiff and Appellant:   Sherry A. Glassman,
    In Propria Persona
    Attorneys for Defendants and             Delmer, Armstrong & Rowland,
    Respondent: Safeco Insurance             LLP
    Company of America
    John R. Brydon
    George A. Otstott
    Lisa A. Pan
    Glassman v. Safeco Insurance Company of America
    H049825