Danko v. Conyers , 432 P.3d 958 ( 2018 )


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  •      The summaries of the Colorado Court of Appeals published opinions
    constitute no part of the opinion of the division but have been prepared by
    the division for the convenience of the reader. The summaries may not be
    cited or relied upon as they are not the official language of the division.
    Any discrepancy between the language in the summary and in the opinion
    should be resolved in favor of the language in the opinion.
    SUMMARY
    February 8, 2018
    2018COA14
    No. 16CA1383, Danko v. Conyers — Torts — Professional
    Liability — Medical Malpractice — Pro Rata Liability
    In this medical negligence case, the division considers the
    effect of the nonparty at fault statute, section 13-21-111.5, C.R.S.
    2017, and Restatement (Second) of Torts section 457 (Am. Law Inst.
    1965) (also called the original tortfeasor rule) on the admissibility of
    evidence offered by the initial provider that negligence of later
    providers caused the harm for which the patient sought damages
    from the initial provider. Rather than designating later providers as
    nonparties at fault, the initial provider sought to introduce evidence
    of their negligence as a superseding cause. The division first holds
    that the nonparty at fault statute does not preclude admission of
    such evidence. However, the division further holds that the trial
    court acted within its discretion in precluding the evidence because
    the initial provider did not show that treatment by the later
    providers, even if negligent, was extraordinary, as required by the
    Restatement. Therefore, the judgment against the initial provider is
    affirmed. The division also holds that jury consulting fees can be
    recovered as costs under the settlement offer statute, section
    13-17-202, C.R.S. 2017.
    COLORADO COURT OF APPEALS                                       2018COA14
    Court of Appeals No. 16CA1383
    Boulder County District Court No. 14CV30542
    Honorable Norma A. Sierra, Judge
    Deborah Danko,
    Plaintiff-Appellee and Cross-Appellant,
    v.
    David J. Conyers, M.D.,
    Defendant-Appellant and Cross-Appellee.
    JUDGMENT AFFIRMED, ORDER AFFIRMED IN PART,
    REVERSED IN PART, AND CASE REMANDED WITH DIRECTIONS
    Division III
    Opinion by JUDGE WEBB
    Graham and Terry, JJ., concur
    Announced February 8, 2018
    Leventhal & Puga, P.C., Jim Leventhal, Erin C. Genullis, S. Paige Singleton,
    Benjamin I. Sachs, Denver, Colorado, for Plaintiff-Appellee and Cross-Appellant
    Jaudon & Avery LLP, David H. Yun, Denver, Colorado, for Defendant-Appellant
    and Cross-Appellee
    ¶1    In a medical negligence case, should the initial provider be
    allowed to present evidence that a later provider’s negligence caused
    the injury for which the patient seeks to recover damages from the
    initial provider? Does the answer depend on whether the initial
    provider attempts to apportion fault or seeks complete exoneration
    because, even if he or she was negligent, the later provider’s
    negligence was a superseding cause of the patient’s injury?
    ¶2    David J. Conyers, M.D., who performed carpal tunnel surgery
    on Deborah Danko, appeals the judgment entered on a jury verdict
    in favor of Ms. Danko. According to Ms. Danko, Dr. Conyers
    negligently failed to detect an infection resulting from the surgery,
    which led to amputation of her forearm. Dr. Conyers challenges
    rulings before and during trial excluding his expert testimony that
    amputation of Ms. Danko’s forearm by another physician, four
    months after she had been discharged from Dr. Conyers’ care, was
    unnecessary. Dr. Conyers raised the other physician’s treatment
    not as a basis to apportion fault, but as a superseding cause that
    relieved him of any liability. He also challenges jury instructions
    related to this issue.
    1
    ¶3    Ms. Danko concedes preservation. She cross-appeals the trial
    court’s refusal to award some costs that she incurred.
    ¶4    We conclude that because Dr. Conyers did not present
    evidence that the amputation was extraordinary, the trial court
    acted within its discretion in excluding evidence of the other
    provider’s negligence. Rejecting Dr. Conyers’ other contentions, we
    affirm the judgment. We reverse the cost award in part.
    I. Background and Procedural History
    ¶5    Dr. Conyers, a hand surgeon, performed carpal tunnel release
    surgery on Ms. Danko’s right wrist on May 3, 2012. During
    post-operative care, he did not order a biopsy to detect possible
    infection. In October 2012, he released her from further care,
    believing that the wound was healing normally and was not
    infected.
    ¶6    A month later, Ms. Danko sought a second opinion from Dr.
    Frank Scott. Dr. Scott performed a minor procedure on Ms.
    Danko’s wrist. Three weeks later, Dr. Scott was notified that
    cultures taken during the procedure had grown out acid-fast bacilli.
    Ms. Danko was diagnosed with a mycobacterium fortuitum (MBF)
    infection.
    2
    ¶7     On January 16, 2013, Ms. Danko saw Dr. Carla Savelli, an
    infectious disease specialist. Dr. Savelli recommended long-term
    dual therapy involving a regimen of several antibiotics and periodic
    surgical debridement of infected tissue. Ms. Danko began taking
    antibiotics.
    ¶8     Two weeks later, Ms. Danko consulted Dr. Bennie Lindeque,
    an orthopedic surgeon. Dr. Lindeque recommended amputation of
    Ms. Danko’s forearm “due to the severity and level of tendon and
    nerve involvement.” He performed the amputation on February 11.
    ¶9     Ms. Danko sued Dr. Conyers, alleging that because he had
    failed to diagnose her MBF infection, he was responsible for the
    amputation. Her retained experts opined that had Dr. Conyers
    ordered a biopsy in July or August, the MBF infection would have
    been detected, dual therapy could have begun, and amputation
    would not have been required.
    ¶ 10   Among other affirmative defenses in Dr. Conyers’ answer, he
    raised nonparty at fault under section 13-21-111.5, C.R.S. 2017.
    Dr. Conyers obtained an extension for designating nonparties.
    Ultimately, he did not do so.
    3
    ¶ 11   Before trial, Ms. Danko moved to strike the nonparty at fault
    defense and to preclude evidence of other providers’ negligence or
    fault. The trial court granted the motion. After citing Restatement
    (Second) of Torts section 457 (Am. Law Inst. 1965) (hereinafter
    Restatement), CRE 401, 402, and 403, the court explained:
    In this Court’s opinion, it would result in
    confusion to jurors were Dr. Conyers to be
    permitted to muddle the waters by calling into
    question the service rendered by subsequent
    doctors, where under [section 457 of] the
    Restatement of Torts, if the jury finds he was
    negligent, legally he would be the sole cause of
    Ms. Danko’s losses.
    ¶ 12   During trial, the court adhered to this ruling. Still, the court
    allowed Dr. Conyers to present evidence as to the standard
    treatment of antibiotics and debridement for MBF infections, that
    Ms. Danko could have been treated this way even after she left Dr.
    Conyers’ care, that she was improving under Dr. Savelli’s
    treatment, that post-amputation photographs of the dissected limb
    showed healthy nerves and tendons, and that Dr. Conyers’ care did
    not cause the amputation.
    ¶ 13   In depositions and at trial, both Dr. Conyers and his principal
    expert acknowledged that failing to diagnose and treat an MBF
    4
    infection earlier makes further medical treatment foreseeable. They
    conceded that an undiagnosed and untreated MBF infection can
    lead to amputation of the infected limb.
    ¶ 14   After Dr. Conyers rested, Ms. Danko moved for a directed
    verdict on causation and requested a nonpattern instruction on the
    original tortfeasor rule embodied in Restatement section 457. The
    trial court denied the motion. Over defense objection, the court
    gave the following nonpattern instruction:
    The plaintiff, Deborah Danko, is entitled to
    recover damages to the full extent of injuries
    and losses suffered as a result of the
    negligence, if any, of the defendant, Dr.
    Conyers, even if the injuries and losses she
    suffered may have been greater due to the
    course of medical care and treatment she
    received thereafter.
    It also gave a standard instruction on causation.
    ¶ 15   The court rejected Dr. Conyers’ tendered instructions on
    intervening cause. It also rejected a tendered instruction that Dr.
    Conyers would be liable for any additional bodily harm (e.g.,
    amputation caused by subsequent health care providers), “provided
    that you also find that the additional bodily harm resulted from the
    normal efforts of health care providers in rendering aid which the
    5
    plaintiff’s injury reasonably required, irrespective of whether such
    acts were done in a proper or negligent manner.”
    ¶ 16     The jury found Dr. Conyers liable and awarded damages of
    $1.5 million.
    II. The Trial Court Erred by Relying on Section 13-21-111.5 to
    Exclude Evidence That Other Providers Caused Ms. Danko’s
    Injuries
    ¶ 17     The trial court held that “[b]y failing to designate the [other]
    providers as nonparties at fault, Dr. Conyers lost the right to argue
    that these providers caused Ms. Danko’s injuries.” It explained that
    “[t]his ruling serves to exclude at trial any expert testimony
    concerning the standard of care related to the [other] providers.”
    ¶ 18     The court based this part of its ruling on section
    13-21-111.5(3)(b), which provides that the “[n]egligence or fault of a
    nonparty may be considered . . . if the defending party gives notice
    that a nonparty was wholly or partially at fault within ninety days
    following commencement of the action . . . .” According to Ms.
    Danko, we must affirm the trial court’s exclusion of evidence related
    to other providers’ negligence or fault under this statute.
    6
    A. Standard of Review
    ¶ 19   Questions of law concerning the application and construction
    of statutes are subject to de novo review. City & Cty. of Denver Sch.
    Dist. No. 1 v. Denver Classroom Teachers Ass’n, 
    2017 CO 30
    , ¶ 32.
    B. Analysis
    ¶ 20   Ms. Danko asserts that “Colorado law forbids the admission of
    evidence of a non-party’s fault where that non-party was not
    properly designated.” She relies on cases such as Thompson v.
    Colorado & Eastern Railroad Co., 
    852 P.2d 1328
    , 1330 (Colo. App.
    1993), where the division held that “a court may not allow the
    finder of fact to consider the negligence or fault of a nonparty
    unless such issue has properly been raised by the defendant in a
    pleading which complies with the requirements of [section]
    13-21-111.5(3).”
    ¶ 21   But the supreme court has held that “a defendant may always
    attempt to interpose a complete defense that his acts or omissions
    were not the cause of the plaintiff’s injuries.” Redden v. SCI Colo.
    Funeral Servs., Inc., 
    38 P.3d 75
    , 81 (Colo. 2001). In other words,
    “[a] defense that the defendant did not cause the plaintiff’s injuries
    is not equivalent to the designation of a non-party because it cannot
    7
    result in apportionment of liability, but rather is a complete defense
    if successful.” 
    Id. (citing Staley
    v. Bridgestone/Firestone, Inc., 
    106 F.3d 1504
    , 1512 (10th Cir. 1997)); see 
    Staley, 106 F.3d at 1512
    (“[Defendant] can only be held liable if its conduct was a
    contributing cause of the injury. It surely must be allowed to
    defend itself by showing someone else’s action or inaction was the
    sole cause of the injury. That is different from apportionment
    between two parties both of whose fault contributed to the injury.”).
    ¶ 22   Dr. Conyers did not seek to apportion fault between him and
    the other providers. Instead, he sought to admit evidence that their
    care — not his — had caused Ms. Danko’s amputation. Under
    Redden, such evidence is admissible even if a nonparty at fault has
    not been designated under section 13-21-111.5. Thus, this portion
    of the trial court’s rationale was incorrect.
    ¶ 23   Still, the trial court did not base its evidentiary ruling solely on
    section 13-21-111.5. See URS Grp., Inc. v. Tetra Tech FW, Inc., 
    181 P.3d 380
    , 387 (Colo. App. 2008) (“[W]e must next consider whether
    the judgment may nevertheless be affirmed on one of the alternative
    grounds . . . .”); cf. Foxley v. Foxley, 
    939 P.2d 455
    , 458-59 (Colo.
    App. 1996) (appellant must challenge all of the trial court’s
    8
    alternative bases for dismissal). So, we turn to whether excluding
    evidence related to the negligence or fault of other providers was
    proper under Restatement section 457, sometimes called the
    original tortfeasor rule.
    III. The Trial Court Did Not Abuse Its Discretion by Relying on
    Restatement Section 457 to Exclude Evidence of Other Providers’
    Fault
    ¶ 24     The trial court found the following under CRE 401 and CRE
    402:
    Even if Dr. Conyers can establish that [the]
    other . . . providers were negligent — an
    assumption made only for purposes of
    considering [Dr. Conyers’ position] — the
    Restatement of Torts [section 457] would hold
    any injuries flowing from this subsequent care
    as being causally related to the care provided
    by Dr. Conyers. Accordingly, the necessity of
    [the] decision to amputate the arm is irrelevant
    if it resulted from any negligence on the part of
    Dr. Conyers to not diagnose the infection.
    A. Standard of Review
    ¶ 25     Dr. Conyers urges us to review this ruling de novo. He argues
    that the trial court misinterpreted Restatement section 457 by
    disregarding an exception to initial physician liability and thus
    applied an incorrect legal standard, which raises a question of law.
    See Bd. of Cty. Comm’rs v. DPG Farms, LLC, 
    2017 COA 83
    , ¶ 34
    9
    (“Whether the court misapplied the law in making evidentiary
    rulings is reviewed de novo.”). And if the court applied an incorrect
    legal standard, Dr. Conyers continues, the court abused its
    discretion. 
    Id. (“An abuse
    of discretion occurs where the trial
    court’s ruling . . . was based on a misunderstanding or
    misapplication of the law.”).
    ¶ 26   But this argument must be juxtaposed against a trial court’s
    broad discretion to admit or exclude evidence. See Mullins v. Med.
    Lien Mgmt., Inc., 
    2013 COA 134
    , ¶ 35. Thus, while we review the
    court’s application of Restatement section 457 de novo, unless it
    misunderstood this section, the decision to exclude the evidence
    remains within the court’s discretion.
    B. Analysis
    ¶ 27   Colorado has adopted the approach set forth in Restatement
    section 457, which provides:
    If the negligent actor is liable for another’s
    bodily injury, he is also subject to liability for
    any additional bodily harm resulting from
    normal efforts of third persons in rendering aid
    which the other’s injury reasonably requires,
    irrespective of whether such acts are done in a
    proper or a negligent manner.
    10
    (Emphasis added.) See 
    Redden, 38 P.3d at 81
    n.2 (“We recognize
    that Colorado case law does not absolve tortfeasors of liability when
    the plaintiff’s injuries result from medical treatment reasonably
    sought and directly related to the actions of the original tortfeasor.”
    (citing Restatement § 457)).
    ¶ 28   Under this approach,
    [i]f the actor knows that his negligence may
    result in harm sufficiently severe to require
    such services, he should also recognize this as
    a risk involved in the other’s forced submission
    to such services, and having put the other in a
    position to require them, the actor is
    responsible for any additional injury resulting
    from the other’s exposure to this risk.
    Restatement § 457 cmt. b (emphasis added).
    ¶ 29   In successive medical malpractice cases, Restatement
    section 457 applies when a later “physician’s treatment is directed
    toward mitigating the harm inflicted by the first.” Basanti v.
    Metcalf, Civ. A. No. 11-cv-02765-PAB-NYW, 
    2015 WL 868758
    , at
    *27 n.50 (D. Colo. Feb. 26, 2015) (quoting Daly v. United States,
    
    946 F.2d 1467
    , 1472 (9th Cir. 1991)). Under such circumstances,
    the initial physician is responsible “for the negligent manner in
    which a [subsequent] physician or surgeon treats the case or
    11
    diagnoses the injuries or performs an operation.” Restatement
    § 457 cmt. c; see Cramer v. Slater, 
    204 P.3d 508
    , 514 (Idaho 2009)
    (Restatement section 457 “generally applies to any subsequent
    medical negligence which is necessary to correct an original act of
    medical negligence, thereby making acts of subsequent medical
    negligence generally foreseeable.”).
    ¶ 30   Still, “[t]he relationship between the harm inflicted by the first
    physician and the treatment initiated by the second is crucial to
    holding the first physician liable for subsequent malpractice.” 
    Daly, 946 F.2d at 1471
    . For example, the Daly court declined to apply
    Restatement section 457 to the first physician where a patient
    “sought treatment from a second physician for an underlying
    ailment rather than for any harm inflicted by earlier treatment.” 
    Id. at 1472.
    Thus, under Restatement section 457, if the jury found
    Dr. Conyers negligent in failing to diagnose the MBF infection, and
    that the infection required further medical treatment, usually he
    would be responsible for the negligent manner in which a later
    provider treated the infection.
    ¶ 31   An exception exists, however, to the liability of initial
    physicians — they are “not answerable for harm caused by
    12
    misconduct which is extraordinary . . . .” Restatement § 457 cmt d.
    Simply put, such misconduct constitutes a superseding cause. See
    Walcott v. Total Petroleum, Inc., 
    964 P.2d 609
    , 612 (Colo. App. 1998)
    (“[W]hen it appears to the court in retrospect that it is highly
    extraordinary that an intervening cause has come into operation,
    the court may declare such a force to be a superseding cause.”
    (citing Restatement § 435)).
    ¶ 32   So, the question becomes this: crediting the evidence cited in
    Dr. Conyers’ opposition, did the trial court misunderstand
    Restatement section 457 by failing to recognize that the amputation
    could have constituted such extraordinary misconduct?
    ¶ 33   Although Dr. Conyers argued for the exception, the trial court
    did not mention it. Instead, the court addressed only the role
    played by other providers’ alleged negligence. For example, the
    court explained that “[e]ven if [Dr. Conyers] is able to establish that
    [other] providers were negligent in the services they rendered to Ms.
    Danko, this would not absolve [Dr. Conyers] of ultimate liability for
    [Ms. Danko’s] losses.” In saying this much, the court did not
    misunderstand Restatement section 457.
    13
    ¶ 34   We are unwilling to equate the court’s mere silence as to the
    exception with so fundamental a misunderstanding as Dr. Conyers
    asserts, especially in the face of his vigorous advocacy and citation
    of authority discussing the exception. See People v. Harris, 
    633 P.2d 1095
    , 1098 (Colo. App. 1981) (“Where, as here, the objecting
    party expressly raises the question of prejudice and the trial court
    nevertheless admits the evidence, it cannot reasonably be assumed
    that the court neglected to weigh that factor.”); cf. McGill v. DIA
    Airport Parking, LLC, 
    2016 COA 165
    , ¶ 31 (“We acknowledge that it
    would have been helpful for the court to address CRE 403 in its
    written order. However, the fact that it did not do so does not
    compel the conclusion that it failed to conduct such an analysis at
    all.”). Instead, we conclude that the court discussed only
    negligence because it had impliedly rejected Dr. Conyers’ evidence
    to support the exception. See, e.g., Janicek v. Obsideo, LLC, 
    271 P.3d 1133
    , 1138 (Colo. App. 2011) (“While the trial court did not
    explicitly reject homeowners’ contractual interpretation argument,
    such a finding was implicit in the court’s ruling that homeowners
    were not entitled to claim a homestead exemption.”).
    14
    ¶ 35   So, having discerned no misunderstanding in the trial court’s
    application of Restatement section 457, we take up the court’s
    evidentiary discretion.
    ¶ 36   According to Dr. Conyers, the jury should have heard evidence
    related to the fault of the other providers because the facts were
    disputed as to whether their misconduct was extraordinary. He
    primarily relies on deposition testimony of his limb preservation
    expert, who testified that dual therapy cures ninety percent of
    patients like Ms. Danko. The expert continued that he was
    “shocked” by the amputation, which he said was “unnecessary”
    after less than two weeks of dual therapy.
    ¶ 37   But despite Dr. Conyers’ assertion that the jury should have
    heard evidence about whether the amputation fell within the
    exception for extraordinary treatment, “[i]f the facts are undisputed,
    the court is duty-bound to apply the rules to determine the
    existence or extent of a negligent actor’s conduct.” Weems v.
    Hy-Vee Food Stores, Inc., 
    526 N.W.2d 571
    , 574 (Iowa Ct. App.
    1994). Put differently, does the record show a factual dispute
    sufficient to have allowed evidence of the other providers’ fault? For
    the following three reasons, we conclude that the trial court
    15
    properly rejected Dr. Conyers’ argument that whether the
    amputation was extraordinary was disputed.
    ¶ 38   First, an “unnecessary” amputation does not equate to
    extraordinary misconduct. Indeed, Restatement section 457 gives
    the following example: “A’s negligence causes B serious harm. B is
    taken to a hospital. The surgeon improperly diagnoses his case and
    performs an unnecessary operation . . . . A’s negligence is a legal
    cause of the additional harm which B sustains.” Restatement § 457
    cmt. c, illus. 1 (emphasis added).
    ¶ 39   Second, although Dr. Conyers established that amputation
    under Ms. Danko’s circumstances is rare, especially where dual
    therapy has just begun, both Dr. Conyers and his expert conceded
    amputation was a foreseeable risk of failure to diagnose — and
    hence delay in treating — an MBF infection. See 
    Redden, 38 P.3d at 81
    (“An intervening cause only relieves the defendant of liability if
    it was not reasonably foreseeable.”). After all, the expert’s opinion
    that ninety percent of patients are cured with dual therapy
    recognizes that ten percent are not. Compare 
    Weems, 526 N.W.2d at 574
    (The court rejected the argument that medical treatment that
    resulted in a rare side effect was extraordinary, explaining, “[i]t is
    16
    immaterial in our analysis that the later injury in this case, spinal
    meningitis, was a rare side effect of the medical treatment. The
    important evidence was . . . that spinal meningitis was a known
    risk of the procedure.”), with Corbett v. Weisband, 
    551 A.2d 1059
    ,
    1075 (Pa. Super. Ct. 1988) (Whether a physician’s misconduct was
    extraordinary was a question for the jury where testimony showed
    the conduct of the physician was “grossly negligent,” “border[ing] on
    insanity,” and a thing that “no sane orthopedic surgeon would ever
    do.”).
    ¶ 40       Third, Dr. Conyers did not present any expert testimony that
    the amputation constituted extraordinary misconduct, much less
    gross negligence. See Bremer v. Gonzalez, No. 2 CA-CV 2011-0064,
    
    2011 WL 6886073
    , at *5 (Ariz. Ct. App. Dec. 29, 2011) (unpublished
    opinion) (“Du-Brook contends, ‘this case involved unforeseeable and
    extraordinary events,’ but identifies no extraordinarily negligent act
    or omission by Gary’s treating physician. It merely notes Bremer
    had alleged the physician fell below the applicable standard of care.
    This is insufficient to support a finding of a superseding cause as a
    matter of law.”). As in Bremer, Dr. Conyers’ experts only opined
    that “substandard medical care” led to the amputation.
    17
    ¶ 41    Under these circumstances, the trial court acted within its
    discretion in excluding evidence of the other providers’ fault
    because Dr. Conyers had not presented any evidence sufficient to
    invoke the extraordinary misconduct exception.
    ¶ 42    Yet, perhaps recognizing that the question was close, the trial
    court went further and provided another reason for excluding the
    evidence. The order explained that even if admissible under CRE
    401 and 402, the evidence should be excluded under CRE 403. We
    address this reason next.
    IV. The Trial Court Acted Within Its Discretion in Excluding
    Evidence of Other Providers’ Fault Under CRE 403
    ¶ 43    The trial court gave two reasons for excluding any evidence
    that other providers’ fault had caused Ms. Danko’s amputation
    under CRE 403.
    ¶ 44    First, the court explained that allowing such evidence “would
    result in confusion to jurors” if Dr. Conyers was “permitted to
    muddle the waters by calling into question the service rendered by
    subsequent doctors, where under the Restatement of Torts [section
    457], if the jury finds he was negligent, legally he would be the sole
    cause of Ms. Danko’s losses.”
    18
    ¶ 45   Second, the court noted that “[Ms. Danko’s] counsel also
    advised . . . as to his concerns that permitting [Dr. Conyers] to
    present testimony questioning the decisions of [other] providers
    would result in a ‘trial within a trial,’ potentially exceeding the
    14-day period set forth for this proceeding.”
    A. Standard of Review
    ¶ 46   A trial court has broad discretion to exclude relevant evidence
    “if its probative value is substantially outweighed by the danger of
    unfair prejudice, confusion of the issues, or misleading the jury, or
    by considerations of undue delay [or] waste of time . . . .” CRE 403;
    see Alhilo v. Kliem, 
    2016 COA 142
    , ¶ 9.
    B. Analysis
    ¶ 47   Restatement section 457 supports the trial court’s concern
    over jury confusion. If the jury found Dr. Conyers negligent, then it
    would have to decide whether the other providers’ alleged
    “substandard care” rose to the level of extraordinary misconduct.
    And herein lies the problem: what constitutes extraordinary
    misconduct is not so easily defined. Compare Carmichael v. Beller,
    
    914 P.2d 1051
    , 1058-59 (Okla. 1996) (Extraordinary medical
    treatment is “something which may not have been within a normal
    19
    effort to render aid . . . for the injuries suffered.”), with Deutsch v.
    Shein, 
    597 S.W.2d 141
    , 145 (Ky. 1980) (if a “divergence of medical
    opinion” exists about the misconduct, it is not extraordinary),
    abrogated on other grounds by Osborne v. Keeney, 
    399 S.W.3d 1
    (Ky. 2012).
    ¶ 48     Restatement section 457 provides two illustrations of
    extraordinary misconduct relieving the original tortfeasor of liability
    for the subsequent misconduct:
     A nurse, unable to bear the sight of the victim’s intense
    suffering, disobeys the surgeon’s instructions and gives an
    injection of morphine so excessive she knows it might be
    lethal. Restatement § 457 cmt. d, illus. 4.
     The victim takes advantage of a hospital stay to have an
    unrelated procedure performed, e.g., the victim’s initial injury
    is a broken leg, but examination reveals an unrelated hernia
    for which surgery is negligently performed. Restatement
    § 457 cmt. e, illus. 6.
    Neither of these scenarios would have been useful in instructing
    the jury here.
    20
    ¶ 49   Instead, the court would have had to draw finer lines than the
    jury might have understood between inadmissible testimony that
    the other providers’ treatment fell below the standard of care and
    admissible testimony that their treatment fell so far below that
    standard as to be extraordinary. Compare Williams v. Le, 
    662 S.E.2d 73
    , 77 (Va. 2008) (“In order to relieve [the physician] of
    liability for his negligent act, the negligence intervening between the
    [physician’s] negligent act and the injury must so entirely supersede
    the operation of the [physician’s] negligence that it alone, without
    any contributing negligence by the [physician] in the slightest
    degree, causes the injury.” (quoting Atkinson v. Scheer, 
    508 S.E.2d 68
    , 71 (1988))), with Puckett v. Mt. Carmel Reg’l Med. Ctr., 
    228 P.3d 1048
    , 1069 (Kan. 2010) (“[W]hether the aspiration resulted from
    negligence or not, it was a foreseeable consequence of the treatment
    alleged to have been necessitated by [the medical providers’] alleged
    negligence. Thus . . . this case is not one of extraordinary
    circumstances . . . .”).
    ¶ 50   As well, allowing evidence of the other providers’ fault would
    create a trial within a trial. Ms. Danko sought to blame Dr.
    Conyers. If he, in turn, sought to blame the other providers, juror
    21
    confusion could result. See Hopey v. Spear, No. 13-CV-2220, 
    2016 WL 9665165
    , at *6 (C.D. Ill. June 23, 2016) (“Such questioning, if
    not reasonably and carefully limited by the court, has the potential
    to turn into a ‘trial within a trial,’ and prejudice and confuse the
    jury as to what is the relevant, actual issue in this case . . . .”). In
    other words, allowing evidence of the other providers’ fault could
    have shifted the jury’s focus from Dr. Conyers’ care of Ms. Danko to
    the other providers’ care. See Manuel v. City of Chicago, 
    335 F.3d 592
    , 597 (7th Cir. 2003) (“If that evidence had been admitted by the
    district court, the parties would have no doubt argued over the
    truthfulness of those allegations, necessarily shifting the focus of
    the trial . . . .”).
    ¶ 51    Given all this, we conclude that the court acted within its
    discretion in excluding this evidence, under both Restatement
    section 457 and CRE 403.
    V. Jury Instructions
    ¶ 52    Lastly, Dr. Conyers challenges the trial court’s jury
    instructions related to the other providers’ fault. Specifically, the
    court gave a midtrial instruction that the “necessity of Ms. Danko’s
    amputation . . . is not a matter that you will be asked to deliberate
    22
    upon.” And at the end of the trial, the court gave Ms. Danko’s
    tendered nonpattern instruction saying that she was entitled to
    damages for the full extent of injuries, “even if the injuries and
    losses she suffered may have been greater due to the course of
    medical care and treatment she received thereafter.”
    ¶ 53   Dr. Conyers also challenges the trial court’s rejection of his
    jury instruction on Restatement section 457 and his intervening
    cause instruction.
    A. Standard of Review
    ¶ 54   We review jury instructions de novo to determine whether the
    instructions as a whole accurately informed the jury of the
    governing law. Nibert v. Geico Cas. Co., 
    2017 COA 23
    , ¶ 8. If they
    did, we review the trial court’s decision to give or reject a particular
    jury instruction for an abuse of discretion. 
    Id. B. Analysis
    ¶ 55   Dr. Conyers argues that the instructions given by the trial
    court misstated the law and instead emphasized Ms. Danko’s
    theory of causation. These arguments fall short.
    ¶ 56   As to the midtrial instruction, Dr. Conyers’ liability for
    damages resulting from the amputation did not depend on whether
    23
    it was necessary. See Carter v. Shirley, 
    488 N.E.2d 16
    , 20 (Mass.
    App. Ct. 1986) (“We see no reason why the rule should not apply to
    physicians whose original negligence causes the intervention of a
    second physician who either improperly diagnoses the case and
    performs an unnecessary operation or makes a proper diagnosis
    and performs a necessary operation negligently.”); see also
    Restatement § 457 cmt. c. Thus, telling the jury it would not
    deliberate on the necessity of the amputation was within the court’s
    discretion.
    ¶ 57   As to the nonpattern jury instruction, recall that the trial court
    excluded evidence of the other providers’ fault. For this reason, the
    instruction accurately described Dr. Conyers’ liability under
    Restatement section 457, if the jury found that he had caused Ms.
    Danko’s injury by having failed to diagnose and treat the MBF
    infection.
    ¶ 58   Still persisting, Dr. Conyers argues that the nonpattern
    instruction should have told the jury that the amputation must
    have resulted “from the normal efforts of third persons in rendering
    aid which the other’s injury reasonably requires.” To be sure, this
    language appears in Restatement section 457 and it was accurately
    24
    quoted in Dr. Conyers’ tendered instruction. But his argument
    misapprehends both “normal” and “reasonably requires.”
    ¶ 59   Restatement section 457 neither defines “normal” nor offers an
    illustrative example. However, comment b to Restatement
    section 443 explains as follows:
    The word “normal” is not used in this Section
    in the sense of what is usual, customary,
    foreseeable, or to be expected. It denotes
    rather the antithesis of abnormal, of
    extraordinary. It means that the court or jury,
    looking at the matter after the event, and
    therefore knowing the situation which existed
    when the new force intervened, does not
    regard its intervention as so extraordinary as
    to fall outside of the class of normal events.
    When a negligently driven automobile hits a
    cow, it is scarcely to be regarded as usual,
    customary, or foreseeable in the ordinary
    sense in which that word is used in negligence
    cases, that the cow, after lying stunned in the
    highway for five minutes, will recover, take
    fright, and make a frantic effort to escape, and
    that in the course of that effort it will charge
    into a bystander, knock him down, and injure
    him. But in retrospect, after the event, this is
    not at all an abnormal consequence of the
    situation which the driver has created. It is to
    be classified as normal, and it will not operate
    as a superseding cause which relieves the
    driver of liability.
    Viewed through this lens, “normal” remains subject to the prior
    analysis of “extraordinary.”
    25
    ¶ 60   Nor must the amputation have been “reasonably required.”
    See Whitaker v. Kruse, 
    495 N.E.2d 223
    , 225-26 (Ind. Ct. App. 1986)
    (“The rationale for permitting recovery under this rule is that the
    tort-feasor created the necessity for medical care in the first
    instance. So long as the individual seeking medical care makes a
    reasonable choice of physicians, he is entitled to recover for all
    damages resulting from any aggravation of his original injury
    caused by a physician’s misdiagnosis or mistreatment.”); Rine v.
    Irisari, 
    420 S.E.2d 541
    , 545 (W. Va. 1992) (“[T]he aggravation
    caused by the negligent or unskillful treatment by a physician of
    the original injury would not have occurred if there had been no
    original injury.” (quoting Makarenko v. Scott, 
    55 S.E.2d 88
    , 93-94
    (W. Va. 1949))).
    ¶ 61   Instead, the phrase “reasonably required” refers to whether
    Ms. Danko was reasonable in seeking medical treatment for the
    MBF infection and whether that treatment related to an injury
    caused by Dr. Conyers. See 
    Redden, 38 P.3d at 81
    n.2; Madrid v.
    Safeway Stores, Inc., 
    709 P.2d 950
    , 951 (Colo. App. 1985)
    (“Although Madrid’s experts testified that the initial surgery was
    reasonably required, and was necessitated as a result of the injury
    26
    to her toe sustained in the fall, the evidence on this issue was in
    conflict. Safeway produced testimony by four medical doctors that
    the original injury was minor and did not require surgery.”).
    ¶ 62   The evidence was undisputed that Ms. Danko reasonably
    sought medical treatment related to the MBF infection. Dr. Conyers
    did not argue that further treatment was unnecessary — only that
    he did not cause the MBF infection needing treatment. On this
    basis, the issue faced by the jury was whether Dr. Conyers caused
    Ms. Danko to seek treatment because he was negligent in neither
    diagnosing nor treating the MBF infection. See 
    Rine, 420 S.E.2d at 544
    (“Many courts have recognized the rule that, in cases of
    successive malpractice, the original medical tortfeasor is liable for
    subsequent negligent medical treatment which is undertaken to
    mitigate the harm caused by the original medical tortfeasor.”). Dr.
    Conyers’ tendered instruction misstated this principle.
    ¶ 63   Turning to the intervening cause instruction requested by Dr.
    Conyers, we conclude that the trial court properly rejected it as
    well. First, as discussed in Part III above, the court acted within its
    discretion in holding that Dr. Conyers’ opposition and his midtrial
    proffer did not include evidence creating a dispute whether the
    27
    amputation resulted from extraordinary misconduct. Second,
    treatment by subsequent providers that merely falls below the
    standard of care does not constitute superseding cause. See
    
    Weems, 526 N.W.2d at 574
    (“[T]he trial court correctly rejected [the
    defendant’s] requested jury instruction on superseding cause”
    where “[t]he undisputed evidence revealed that medical treatment
    rendered to Weems was not an extraordinary or unforeseeable
    act.”).
    ¶ 64    In sum, we conclude that the jury was properly instructed.
    VI. Ms. Danko’s Cross-Appeal
    ¶ 65    On cross-appeal, Ms. Danko challenges the trial court’s denial
    of costs totaling $47,530.75. Dr. Conyers does not dispute
    preservation. We affirm in part and reverse in part.
    A. Additional Background
    ¶ 66    On October 21, 2015, Ms. Danko made a settlement offer
    under section 13-17-202(1)(a)(I), C.R.S. 2017. Dr. Conyers did not
    accept the offer. The verdict exceeded the amount of the offer.
    ¶ 67    The trial court reduced the recoverable costs below amounts
    paid by Ms. Danko in four areas. As to Dr. Lindeque, who testified
    for Ms. Danko as a nonretained treating physician — although Ms.
    28
    Danko had initially endorsed him as a retained expert — the court
    reduced costs from $45,000 to $15,000. The court reduced the
    costs for ReEntry Rehabilitation Services, which prepared a post-
    amputation life care plan, from $15,434.60 to $10,280.73. It
    disallowed entirely Ms. Danko’s claim for court reporter fees and
    transcript costs totaling $2125.75, all of which involved depositions
    of her treating physicians taken by Dr. Conyers. The court also
    disallowed $7944.14 claimed for a jury consultant and related
    travel expenses.
    B. Standard of Review and Law
    ¶ 68   Awarding costs is within the discretion of the trial court, and
    the court’s findings as to the reasonableness and amount of costs
    will be disturbed on appeal only for an abuse of discretion. Archer
    v. Farmer Bros. Co., 
    90 P.3d 228
    , 230 (Colo. 2004). A trial court
    abuses its discretion when it acts in a manifestly arbitrary, unfair,
    or unreasonable manner. 
    Id. ¶ 69
      According to section 13-17-202(1)(a)(I),
    [i]f the plaintiff serves an offer of settlement in
    writing at any time more than fourteen days
    before the commencement of the trial that is
    rejected by the defendant, and the plaintiff
    recovers a final judgment in excess of the
    29
    amount offered, then the plaintiff shall be
    awarded actual costs accruing after the offer of
    settlement to be paid by the defendant.
    ¶ 70   However, merely by making a statutory settlement offer, a
    party cannot “compel a trial court to award actual costs no matter
    how unreasonable or unnecessary such expenses may have been.
    This would lead to the untenable result that a trial court awards
    costs for expenses which never should have been incurred.” Scholz
    v. Metro. Pathologists, P.C., 
    851 P.2d 901
    , 910 (Colo. 1993). Rather,
    in considering whether to award such costs,
    [t]he trial court has no discretion to deny an
    award of actual costs under this statute, so
    long as it determines that those costs are
    reasonable. Nonetheless, the trial court holds
    discretion over the amount of costs to be
    awarded and may disallow certain requested
    costs as unreasonable so long as the court
    includes in the record its reasons for doing so.
    Bennett v. Hickman, 
    992 P.2d 670
    , 673 (Colo. App. 1999),
    superseded by statute on other grounds, Ch. 5, sec. 1, § 13-17-202,
    2008 Colo. Sess. Laws 8, as recognized in Miller v. Hancock, 
    2017 COA 141
    .
    ¶ 71   The proper exercise of this discretion requires the trial court to
    answer two questions:
    30
    1. Were the expert’s services reasonably
    necessary to the party’s case?
    2. Did the party expend a reasonable amount
    for the expert’s services?
    Clayton v. Snow, 
    131 P.3d 1202
    , 1203 (Colo. App. 2006) (citations
    omitted). The answers to these questions may lead to reduction in
    the amount of costs awarded. See, e.g., Underwood v. Dillon Cos.,
    
    936 P.2d 612
    , 616 (Colo. App. 1997) (“On cross-appeal, King
    Soopers claims that the trial court abused its discretion in awarding
    only half of its requested amount of expert witness fees. We
    disagree.”).
    ¶ 72   “A trial court’s award of costs must be supported by findings
    that, considered together with the record, are sufficient to permit a
    reviewing court to determine the basis for the award.” Miller, ¶ 46.
    Specifically, the findings “must include an explanation of whether
    and which costs are deemed reasonable.” 
    Id. C. Application
    ¶ 73   Dr. Conyers argues that the trial court properly exercised its
    discretion because Ms. Danko incurred some of the reduced costs
    before the statutory settlement offer. This argument falls short
    because the court made no findings on timing. Instead, it
    31
    articulated other reasons for reducing the costs claimed, which we
    address.
    1. Dr. Lindeque
    ¶ 74   The trial court found:
    The invoices submitted by Dr. Lindeque do not
    differentiate between the time he spent in an
    expert capacity versus that spent as a treating
    physician. In researching medical literature,
    Dr. Lindeque billed 69.5 hours. At trial, the
    Court was struck by Dr. Lindeque’s testimony
    about the time spent preparing for trial relative
    to the period of time he spent treating Ms.
    Danko. His time treating Ms. Danko was very
    limited, especially when considering the
    significance of the procedure [he] performed.
    By contrast, the time he spent preparing for
    trial exceeded his time with Ms. Danko by
    more than tenfold. The Court finds that
    awarding $15,000 for Dr. Lindeque’s
    preparation and participation at trial is
    reasonable under the circumstances of this
    case.
    Ms. Danko does not assert that these findings lack record support.
    And the findings explain why the court reduced these costs.
    ¶ 75   Undaunted, Ms. Danko argues that the court should have
    allowed the entire $45,000 charge because Dr. Lindeque testified
    “in good faith,” he “professionally and diligently performed” his
    32
    underlying work, and the court did not find his $500 hourly rate
    unreasonable. This argument misses the mark in two ways.
    ¶ 76     First, Ms. Danko reduces the initial Clayton question — “Were
    the expert’s services reasonably necessary to the party’s case?” — to
    a binary choice. But doing so would deprive trial courts of
    discretion to determine that some, but not all, of an expert’s
    services were reasonably necessary. See 
    Underwood, 936 P.2d at 616
    .
    ¶ 77     Second, at trial Dr. Lindeque did not testify for Ms. Danko as a
    retained expert. And as discussed above, the court precluded all
    evidence that the amputation was unnecessary. Given these
    limitations, the court concluded that his charges were excessive,
    without impugning Dr. Lindeque’s good faith, questioning his
    professionalism, or commenting on his credibility. Cf. In re
    Marriage of Elmer, 
    936 P.2d 617
    (Colo. App. 1997) (finding half of
    fee reasonable in light of charges that trial testimony by expert
    witness was duplicative and $14,470 in requested costs was
    excessive).
    ¶ 78     On this basis, we discern no abuse of discretion.
    33
    2. ReEntry Rehabilitation
    ¶ 79   The trial court found:
    Plaintiff seeks $15,434.60 for ReEntry
    Rehabilitation Services. Helen Woodard
    assessed Ms. Danko’s vocational
    rehabilitation. The report completed, and for
    which billing is included, also includes review
    of depositions and review of medical records,
    which are believed to have little relevance to
    the development of a post-amputation Life
    Care Plan. This information is then
    summarized in 12 pages of a 37-page report.
    The Court finds that approximately two-thirds
    of the amount requested for Ms. Woodard, or
    $10,280.73, is reasonable to award as costs.
    The $400 cost for setting up the file is
    regarded as necessary and reasonable.
    Again, Ms. Danko does not assert that these findings lack record
    support.
    ¶ 80   Instead, she argues that when the trial court concluded
    approximately one third of the report had “little relevance” to the
    care plan, the court made an improper credibility determination.
    But the court did not mention credibility. Nor does Ms. Danko
    explain why the deposition and record review were reasonable and
    necessary to develop the life care plan.
    ¶ 81   Of course, the court’s one-third reduction of the costs claimed
    was an approximation based on the portion of the report the court
    34
    questioned. But “[t]he trial court’s goal when awarding attorney
    fees and costs ‘is to do rough justice, not to achieve auditing
    perfection.’” Estate of Casper v. Guarantee Tr. Life Ins. Co., 
    2016 COA 167
    , ¶ 70 (citation omitted) (cert. granted June 26, 2017).
    ¶ 82   For these reasons, we cannot say the trial court abused its
    discretion in reducing the ReEntry Rehabilitation costs.
    3. Court Reporter Fees and Transcripts
    ¶ 83   The trial court found:
    An objection is also presented for the
    deposition fees totaling $2,125.75 for a
    number of Plaintiff’s treating physicians, as
    these were taken when Plaintiff objected to
    informal discovery by Defendant. The Court
    agrees that Plaintiff could have cooperated
    with Defendant’s approach on this point, and
    this amount of $2,125.75 is disallowed from
    Plaintiff’s bill of costs.
    Here, too, Ms. Danko does not assert that these findings lack record
    support.
    ¶ 84   Rather, she asserts that “[r]egardless of the precipitating
    factors for Defendant’s decision to take depositions of Plaintiff’s
    treating physicians,” the record does not show that the related
    “transcription and reporter fees actually expended were
    unreasonable.” But this assertion begs the question of whether, as
    35
    the court found, Ms. Danko could have avoided these costs. After
    all, to recover deposition costs, a party must show “the taking of the
    deposition and its general content were reasonably necessary.”
    Cherry Creek Sch. Dist. No. 5 v. Voelker, 
    859 P.2d 805
    , 813 (Colo.
    1993).
    ¶ 85   Thus, the findings support the discretionary decision to
    disallow these costs.
    4. Jury Consulting
    ¶ 86   The trial court found:
    Defendant objects to an expense of $6,474.57
    for a jury consultant, plus travel expenses of
    $1,469.57 for travel on short notice. The
    Court agrees with Defendant that these two
    expenses are unnecessary to Plaintiff’s counsel
    [sic] presentation of the case to a jury, and are
    disallowed.
    Unlike the three other findings discussed, this finding does not
    involve any factual questions resolvable by record examination.
    ¶ 87   The parties have not cited, nor have we found, Colorado
    authority addressing jury consulting expenses as recoverable costs.
    Dr. Conyers cites several unpublished decisions from the United
    States District Court for the District of Colorado. Ms. Danko
    responds that federal law defines recoverable costs more narrowly
    36
    than does Colorado law, citing Crawford Fitting Co. v. J.T. Gibbons,
    Inc., 
    482 U.S. 437
    , 441-42 (1987). She is correct.
    ¶ 88   Although section 13-17-202(1)(b) does not mention jury
    consulting expenses, use of “including” in the statute “means that
    the items of ‘actual costs’ listed are illustrative rather than
    exhaustive.” Catlin v. Tormey Bewley Corp., 
    219 P.3d 407
    , 416
    (Colo. App. 2009).
    ¶ 89   On the one hand, authority in other states is sparse. Citing
    federal precedent, one state has held that such expenses are not
    recoverable as costs. Delmonico v. Crespo, 
    127 So. 3d 576
    , 579
    (Fla. Dist. Ct. App. 2012) (“We agree with other jurisdictions which
    have held that costs and fees associated with jury consultants are
    not recoverable.”); see also City of Shreveport v. Chanse Gas Corp.,
    
    794 So. 2d 962
    , 979 (La. Ct. App. 2001) (“Here, the District Court
    viewed the mock trial and jury consultant as overhead items which
    cannot be reimbursed. Given that these exercises were strictly to
    aid the attorneys and yielded only marginal results, we cannot say
    the District Court abused its great discretion in denying these items
    as costs.”).
    37
    ¶ 90   On the other hand, we recognize that “[r]ising costs of
    increasingly specialized lawyers, the need to deploy expensive
    experts, jury consultants, and all the associated expenses have
    priced some parties out of the market.” Marc Galanter, The
    Vanishing Trial: An Examination of Trials and Related Matters in
    Federal and State Courts, 1 J. Empirical Legal Stud. 459, 517
    (2004) (footnote omitted), cited with approval in State ex rel. Crown
    Power & Equip. Co. v. Ravens, 
    309 S.W.3d 798
    , 804 (Mo. 2009).
    ¶ 91   Balancing this limited authority against the concern over
    rising litigation expenses leads to considering the policy underlying
    our settlement offer statute. “The intent of section 13-17-202 is to
    encourage settlements by imposing costs upon a rejecting party in
    the event the final result is less favorable to that party than the
    offer.” Hall v. Frankel, 
    190 P.3d 852
    , 866 (Colo. App. 2008). In
    other words, “[t]he purpose of section 13-17-202 is to encourage the
    settlement of litigation by increasing the cost of proceeding with a
    lawsuit after the opposing party has made a reasonable settlement
    offer.” Lawry v. Palm, 
    192 P.3d 550
    , 565 (Colo. App. 2008).
    ¶ 92   These statements of purpose and intent tip the scales in favor
    of recovery of jury consulting expenses by a party who made a
    38
    statutory settlement offer, which was rejected, and did better than
    the offer at trial.
    ¶ 93      Nor would allowing Ms. Danko to recover the jury consulting
    expenses contravene the trial court’s discretion over
    reasonableness. Recall, the court did not find these expenses
    unreasonable, in whole or in part. Rather, the court found them
    “unnecessary to Plaintiff’s counsel [sic] presentation of the case to a
    jury.”
    ¶ 94      But the statute does not impose a necessity requirement on
    recovery of “actual costs accruing after the offer.” And while
    reasonableness has been implied as a precondition to recovery,
    reasonableness is a lower standard than necessity. Thus, the
    court’s finding of “unnecessary” does not support disallowing this
    cost.
    ¶ 95      In sum, the trial court’s cost award is reversed as to the
    $7944.14 jury consulting and related travel expenses. In all other
    respects, the award is affirmed.
    39
    VII. Conclusion
    ¶ 96   The judgment is affirmed. The trial court’s cost award is
    affirmed in part and reversed in part. On remand, the trial court
    shall increase the costs awarded to Ms. Danko by $7944.14.
    JUDGE GRAHAM and JUDGE TERRY concur.
    40