James B. Wilson Vs. Farm Bureau Mutual Insurance Company ( 2009 )


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  •                    IN THE SUPREME COURT OF IOWA
    No. 07–0101
    Filed July 31, 2009
    JAMES B. WILSON,
    Appellant,
    vs.
    FARM BUREAU MUTUAL INSURANCE COMPANY,
    Appellee.
    Appeal from the Iowa District Court for Muscatine County, David H.
    Sivright, Jr., Judge.
    Appeal and cross-appeal of district court calculation of judgment and
    interest. AFFIRMED AS MODIFIED; REMANDED WITH INSTRUCTIONS.
    Sara L. Riley of Tom Riley Law Firm, Cedar Rapids, for appellant.
    Brian C. Ivers, Patrick L. Woodward, and Heather L. Carlson of
    McDonald, Woodward & Ivers, P.C., Davenport, for appellee.
    2
    CADY, Justice.
    This is the second appeal in the second lawsuit to arise from a motor
    vehicle accident in which an automobile struck and killed a pedestrian. In
    the first lawsuit, the pedestrian’s estate sued the driver of the automobile
    and a jury awarded damages. In this second lawsuit, the estate is seeking
    underinsured motorist benefits from the decedent’s insurer. Our decision in
    the   first   appeal    in   this   second   lawsuit   determined   the    decedent’s
    underinsured motorist insurer could not relitigate the issue of damages in
    this second lawsuit, and we remanded for proceedings consistent with our
    opinion.      On remand, the district court entered a judgment reflecting an
    offset for previous payments by the decedent’s insurer and awarded interest.
    Both parties appealed. We affirm the judgment but remand for modification
    of both the offset and the interest award.
    I. Background Facts and Proceedings.
    Lily Wilson was struck by a car while walking across a road to collect
    mail from her mailbox. Tragically, she died later the same day from injuries
    suffered in the accident.
    Wilson’s estate sued the driver of the motor vehicle, and a jury
    awarded the estate $159,795.31 in the lawsuit against the driver. The award
    included $7906.81 for interest on reasonable burial expenses, $6888.50 for
    medical expenses, and $145,000 for loss of parental consortium. The jury
    found Wilson to be twenty percent at fault for the accident.                 The jury
    instructions, given by the trial court without objection, informed the jury
    Wilson’s damages would not be reduced by her fault.                       Despite the
    instructions, the district court reduced a portion of the jury’s award by
    twenty percent and entered judgment for $127,836.24.
    The estate moved to amend the judgment based on the unchallenged
    jury instruction.      Prior to a ruling, the tortfeasor’s insurer paid its policy
    3
    limits of $100,000 in exchange for satisfaction of the judgment. The district
    court, realizing its error and attempting to correct it, subsequently granted
    the motion and amended the judgment to $156,836.25. 1
    Wilson’s estate then demanded payment of $56,836.25 along with
    prejudgment      and   postjudgment       interest   from    Farm    Bureau     Mutual
    Insurance Company, Wilson’s insurer, under the underinsured motorist
    provision of the policy of insurance. Farm Bureau offered $22,000 in full
    settlement, which the estate rejected.
    As a result, the estate sued Farm Bureau for breach of the insurance
    contract. Cross-motions for summary judgment were directed to the issue of
    whether Farm Bureau was precluded from relitigating the issue of damages.
    Ultimately, we held in a previous appeal that Farm Bureau was bound by the
    original judgment of $127,836.24, and we remanded. See Wilson v. Farm
    Bureau Mut. Ins. Co., 
    714 N.W.2d 250
    , 263 (Iowa 2006).
    On remand, the estate requested the district court to enter judgment.
    The district court entered a judgment against Farm Bureau for $27,836.24
    “together with interest as allowed by law” and costs on July 3, 2006. After
    Farm Bureau objected to the judgment, the district court amended the
    judgment on December 19, 2006. The amended judgment is the basis of the
    present appeal. The district court explained the judgment in a seven-page
    ruling filed December 19, 2006, addressing two primary issues affecting
    calculation of the judgment.
    First, the district court considered the effect of a pretrial $5000
    payment for medical expenses by Farm Bureau to Wilson’s estate.                     The
    payment represented the policy limits of the “medical payment coverage”
    1The   amended judgment reflected the district court’s belief that the interest on
    reasonable burial expenses and medical expenses should be reduced by Wilson’s fault, but
    the loss-of-consortium damages should not be reduced.
    4
    provision of Wilson’s insurance contract with Farm Bureau.        The medical
    payment coverage provision provided that any medical payment coverage
    paid would be applied to reduce any payment later owed under the
    underinsured motorist provision of the insurance contract.        The district
    court held Farm Bureau’s argument that the judgment must be offset by the
    $5000 medical coverage payment was a claim for subrogation. As a result,
    the district court held Iowa Code section 668.5(3) (2001) required the
    “subrogation” claim to be reduced by the twenty percent comparative fault
    assigned to Wilson by the jury. Nonetheless, the district court held Farm
    Bureau was entitled to a $5000 offset because the reduction of Wilson’s
    $6888.50 in medical expenses by her twenty percent fault still exceeded
    $5000. The district court further held Farm Bureau was responsible, as a
    subrogee, to pay the estate a prorated share of the attorney fees and
    expenses incurred in obtaining the jury verdict against the underinsured
    motorist. The district court held Farm Bureau’s share of attorney fees was
    $1666.67, with expenses of $121.47.
    Second, the district court calculated the interest owed by Farm
    Bureau. The court held Farm Bureau was responsible for all interest the
    estate could have recovered from the tortfeasor.      The court held interest
    began to accrue on the date the underlying tort lawsuit was filed against the
    tortfeasor according to Iowa Code section 668.13, and the “aggregated
    award” (presumably the jury award plus interest from the date of the
    underlying tort suit) in turn accumulated interest from the date of judgment
    in the tort suit according to Iowa Code section 535.3(1). Finally, the district
    court suspended the accrual of interest during the pendency of the first
    appeal of this second lawsuit, resuming on the date of our ruling in the first
    appeal.
    5
    Both parties appealed from the judgment.         The estate argues the
    district court erroneously failed to reduce Farm Bureau’s offset for medical
    payment coverage below $5000, erred in its method of deducting the offset,
    and incorrectly suspended postjudgment interest. Farm Bureau argues the
    offset for the payment of $5000 under the medical payments coverage
    provision is a contractual offset, not subject to subrogation principles, and it
    should not have been reduced by comparative fault or by a pro rata share of
    attorney fees and expenses.       Farm Bureau also argues the district court
    erred in its award of interest.
    II. Standard of Review.
    The parties agree these legal issues should be reviewed for errors of
    law. Iowa R. App. P. 6.907 (2009). We have previously reviewed interest
    issues for errors of law. Opperman v. Allied Mut. Ins. Co., 
    652 N.W.2d 139
    ,
    142 (Iowa 2002); Wilson v. IBP, Inc., 
    589 N.W.2d 729
    , 730 (Iowa 1999).
    III. Subrogation and Offsets.
    Farm Bureau acknowledges it is responsible for the amount of
    damages not recovered by Wilson’s estate from the driver of the automobile
    that struck and killed Wilson. The estate concedes Farm Bureau is entitled
    to offset from that amount some portion of the $5000 previously paid by
    Farm Bureau under the medical payment coverage provision of the
    insurance contract.    The estate maintains, however, the $5000 offset is a
    subrogation interest and should be reduced according to two different
    principles applicable to subrogation interests.
    The estate first points to the axiom “that the rights of a subrogee are
    the same as, but no greater than, those of the person for whom the subrogee
    is substituted.” Employers Mut. Cas. Co. v. Chicago & N.W. Transp. Co., 
    521 N.W.2d 692
    , 696 (Iowa 1994). Relying on that principle, the estate argues
    Farm Bureau’s rights as a subrogee can be no greater than Wilson’s rights,
    6
    for whom it is substituted.      Consequently, as the argument goes, Farm
    Bureau’s subrogation interest must be reduced by Wilson’s twenty percent
    comparative fault.
    Second, the estate argues the offset should be reduced by a pro rata
    share of attorney fees and expenses attributable to Farm Bureau. The estate
    points to Iowa Code section 668.5(3), which is part of our comparative fault
    statute and requires, in comparative fault cases, “contractual or statutory
    subrogated persons shall be responsible for a pro rata share of the legal and
    administrative expenses incurred in obtaining the judgment or verdict.” The
    principle is also an equitable one applicable in all subrogation contexts.
    Principal Cas. Ins. Co. v. Norwood, 
    463 N.W.2d 66
    , 68 (Iowa 1990)
    (recognizing the insurer should pay pro rata attorney fees and expenses
    because it “ ‘should not be entitled to enjoy the fruits of the assured’s
    judgment against a tortfeasor without contributing in any way to the costs or
    burdens of litigating that claim’ ” (quoting Hedgebeth v. Medford, 
    378 A.2d 226
    , 230 (N.J. 1977))).    Farm Bureau argues both of those principles are
    inapplicable because Farm Bureau is not a subrogee; in other words, the
    offset is not a subrogation interest but a contractual one.
    Our cases have previously discussed subrogation rights, including in
    the insurance context. “Subrogation is a doctrine that originated in equity to
    give relief to a person or entity that pays a legal obligation that should have,
    in good conscience, been satisfied by another.” Allied Mut. Ins. Co. v. Heiken,
    
    675 N.W.2d 820
    , 824 (Iowa 2004). “Subrogation refers to both a legal right
    and a legal action.”      
    Id.
     at 824 n.1.   “The term comes from the Latin
    ‘subrogare,’ which means to substitute or put in place of another.” 
    Id.
     The
    subrogee’s rights are derivative of the rights held by the insured against the
    tortfeasor. 
    Id. at 824
    . In the insurance context, the doctrine permits “an
    insurer who has paid a loss to an insured to become ‘subrogated in a
    7
    corresponding amount to the insured’s right of action against any other
    person responsible for the loss.’ ” 
    Id.
     (quoting 6A John A. Appleman & Jean
    Appleman, Insurance Law and Practice § 4051, at 103 (rev. ed. 1972)).
    Subrogation rights often arise by contract, but even when the insurance
    contract does not explicitly provide for them, “[t]he insurer’s right to
    subrogation attaches by operation of law upon payment of the loss based on
    principles of equity.” Id. at 824–25 n.2.
    Because the subrogated insurer is being substituted for the insured
    for reasons of contract or equity, the subrogated insurer’s rights are “subject
    to all defenses the tortfeasor could assert against the insured.” Id. at 825.
    The estate relies on this principle to argue Farm Bureau’s right to set off the
    previously paid medical expenses should be reduced by Wilson’s twenty
    percent fault. Apparently, the argument is that the estate would have no
    right to the entire $5000 in medical expenses against the tortfeasor because
    Wilson was twenty percent at fault.
    The argument asserted by the estate ignores the basis for the offset in
    this case.   This case does not arise from any of the typical subrogation
    contexts. This is not a case in which the insurer pays its insured then seeks
    to assert contractual or equitable subrogation rights against the responsible
    tortfeasor. Nor is this a case in which the insurer pays its insured some
    amount, then the insured sues the tortfeasor to collect more damages. In
    this latter case, the insurer is subrogated to the portion of its insured’s claim
    that it paid. Id. at 824. However, the subrogation interest—being derived
    from the insured’s interest—is subject to any defenses available against the
    insured. Id. at 824–25.
    In this case, Farm Bureau asserts a contractual offset. The pertinent
    contract of insurance at issue provides: “Any payment [under the medical
    payment coverage provision] shall be applied toward . . . the payment of a
    8
    money judgment of bodily injury for any insured under . . . Part IV
    [underinsured motorist coverage provision].”           While underinsured motorist
    coverage is mandatory in Iowa, see Iowa Code § 516A.1, offsets and other
    limitations are permissible for the purpose of avoiding duplication of
    coverage.      See Iowa Code § 516A.2 (providing underinsured “forms of
    coverage may include terms, exclusions, limitations, conditions, and offsets
    which are designed to avoid duplication of insurance or other benefits”);
    Leuchtenmacher v. Farm Bureau Mut. Ins. Co., 
    461 N.W.2d 291
    , 295 (Iowa
    1990) (approving an identical offset). The offset sought by Farm Bureau is
    not an attempt to claim its subrogation interest in money paid to the estate
    by the tortfeasor. Instead, Farm Bureau is seeking to enforce a bargained-
    for contract provision allowing it to avoid paying duplicative benefits by
    reducing its underinsured-motorist-coverage payment by the amount already
    paid pursuant to the medical-payment-coverage section of the policy.
    Because the interest asserted is not a subrogation interest, the typical
    equitable reductions are not applicable.
    The reductions of subrogation interests provided for in Iowa Code
    section 668.5(3) are treated the same. The estate argues Iowa Code section
    668.5(3) requires the offset to be reduced by Wilson’s fault and a pro rata
    share of attorney fees and expenses attributable to Farm Bureau. Iowa Code
    section 668.5(3) applies to subrogation rights. 2                Again, there is no
    2Iowa   Code section 668.5(3) provides:
    3. Contractual or statutory rights of persons not enumerated in
    section 668.2 for subrogation for losses recovered in proceedings pursuant to
    this chapter shall not exceed that portion of the judgment or verdict
    specifically related to such losses, as shown by the itemization of the
    judgment or verdict returned under section 668.3, subsection 8, and
    according to the findings made pursuant to section 668.14, subsection 3, and
    such contractual or statutory subrogated persons shall be responsible for a
    pro rata share of the legal and administrative expenses incurred in obtaining
    the judgment or verdict.
    9
    subrogation right involved here, so section 668.5(3) should not be applied to
    reduce the contractual offset.
    Additionally, Farm Bureau points to our past precedent holding
    chapter 668 does not apply to underinsured motorist claims based on
    contract. Indeed, we addressed the question of whether chapter 668 applies
    to lawsuits if an injured party sues its insurer for underinsured motorist
    claims. In Vasquez v. LeMars Mutual Insurance Co., 
    477 N.W.2d 404
     (Iowa
    1991), we confronted the issue of whether the interest provision of section
    668.13 governs in such a lawsuit. In Vasquez, we based our holding on the
    section 668.13(1) provision that the subsection applied only to “ ‘actions
    brought pursuant to’ ” chapter 668.       
    477 N.W.2d at
    408–10 (emphasis
    omitted) (quoting 
    Iowa Code § 668.13
    ).      We recognized that chapter 668,
    which governs comparative fault, applies only to claims “ ‘involving the fault
    of more than one party to the claim.’ ”      Id. at 409 (quoting 
    Iowa Code § 668.3
    (2)). We held the underinsured motorist claim was a contractual one,
    and consequently did not involve “the fault of more than one party to the
    claim.”   
    Id.
       “Simply put, the underinsured motorist claim did not trigger
    chapter 668 because the requirements of section 668.3(2) were not met.” Id.
    at 410.   The underinsured motorist claim here was similarly not brought
    pursuant to chapter 668.
    Still further, the equitable principle underlying the requirement of the
    insurer to pay a pro rata portion of the attorney fees and expenses is
    inapposite to the facts of this case. Farm Bureau is not seeking a free ride
    on the coattails of the estate’s counsel.    With regard to Farm Bureau’s
    demand to reduce the judgment by the $5000 it paid pursuant to the
    medical payment coverage provision, Farm Bureau is not benefiting from the
    estate’s efforts to recover money from the tortfeasor. Instead, Farm Bureau
    is seeking to enforce the contract clause allowing the insurer to set off the
    10
    $5000 of medical payment coverage Farm Bureau itself paid voluntarily from
    a subsequent payment under the underinsured motorist coverage provision.
    Thus, we refuse to read section 668.5(3) and our past cases dealing with
    equitable subrogation to require an insurer to pay for the insured’s
    attorneys’ efforts to recover the medical payments the very same insurer paid
    voluntarily. See Crabtree ex rel. Kemp v. Estate of Crabtree, 
    837 N.E.2d 135
    ,
    142 (Ind. 2005) (refusing to hold “the legislature intended the Subrogation
    Statute to compel an insurer to pay attorney’s fees to recover the amount of
    its medical payments from itself”). Farm Bureau is entitled to a full $5000
    offset of the amount it owes under the underinsured motorist coverage
    provision.    That amount will be influenced by our review of the district
    court’s award of interest, from which both parties have appealed, and to
    which we now turn.
    IV. Interest.
    The district court judgment, as amended, provided for interest from
    February 7, 2000, when the estate filed the underlying tort lawsuit.     The
    court suspended interest on the judgment during the first appeal of this
    second lawsuit until May 12, 2006, the day we filed our first opinion in this
    second lawsuit.     Both parties appealed the district court’s calculation of
    interest.    The estate argues the district court improperly credited certain
    payments to principal rather than interest and also erred in suspending
    interest during the first appeal of this second lawsuit. Farm Bureau does
    not dispute the district court holding that interest began to run when the
    underlying tort lawsuit was filed, but argues no interest should have
    accumulated from March 19, 2002, when the tortfeasor’s insurer paid its
    policy limits until December 19, 2006, when the district court amended its
    July 3, 2006 judgment in this lawsuit.
    11
    In order to begin on firm ground, we begin where the district court, the
    parties, and precedent of this court unanimously agree. As an underinsured
    motorist carrier, Farm Bureau “bound itself under its insurance policy to pay
    its insured what the insured would have recovered against a third party if
    that party had been adequately insured.” Opperman, 
    652 N.W.2d at 142
    .
    The district court began from this understanding, and Farm Bureau does
    not contest it.
    The district court relied on Iowa Code section 668.13 to hold the estate
    was entitled to recover from the tortfeasor the judgment in the underlying
    tort lawsuit together with interest from the date of the commencement of the
    action. The provision of prejudgment interest in section 668.13 “is based on
    the realization that the loss caused by tortious conduct results in the loss of
    use of compensatory damages, and to make the plaintiff whole, prejudgment
    interest should be allowed.”         
    Id.
     at 142–43.      Neither party argues interest
    started to run on the tort damages at any other time, so we will not review
    that portion of the district court’s holding. 3 Thus, interest began to run on
    February 7, 2000, the date the underlying tort lawsuit was commenced.
    3At  common law, Iowa courts applied the general rule that interest does not run until
    money becomes due and payable, “and in the case of unliquidated claims this is the date
    they become liquidated, ordinarily the date of the judgment.” Mrowka v. Crouse Cartage Co.,
    
    296 N.W.2d 782
    , 783 (Iowa 1980). We recognized an exception to this rule “ ‘in cases in
    which the entire damage for which recovery is demanded was complete at a definite time
    before the action was begun.’ ” 
    Id.
     (quoting Bridenstine v. Iowa City Elec. Ry., 
    181 Iowa 1124
    , 1136, 
    165 N.W. 435
    , 439 (1917), overruled in part on other grounds by Menke v.
    Peterschmidt, 
    246 Iowa 722
    , 727, 
    69 N.W.2d 65
    , 69 (1955)). We have noted that actions for
    wrongful death fall within that exception. 
    Id.
     In addressing the apparent inconsistency
    between the common-law rule and section 668.13, we recently held section 668.13 “does not
    govern in those situations in which our case law has provided that interest may be allowed
    from a date prior to the filing of a petition” such as “when it has been shown that the
    damage was complete at a particular time.” Gosch v. Juelfs, 
    701 N.W.2d 90
    , 92 (Iowa 2005).
    Although these rules seem to apply to this wrongful death action, the parties have not
    preserved and briefed the issue. Additionally, it seems dubious to say the loss of
    consortium damages at issue in this case were “fixed in amount and time of accrual” prior
    to the judgment in the tort lawsuit. See 
    id.
     (endorsing prefiling interest on “fixed” or
    “certain” elements of damages but not future damages); Horak v. Argosy Gaming Co., 
    648 N.W.2d 137
    , 150 (Iowa 2002) (noting parental consortium damages may be enormous “and
    will arguably extend into [children’s] adulthood.”). As such, we forego consideration of that
    12
    On the date of judgment in the tort lawsuit, the interest was
    aggregated with the damages and began to draw interest as calculated by
    Iowa Code section 535.3, in the same way as any civil money judgment. The
    tortfeasor was insured for only $100,000 and provided proof of her inability
    to pay the excess judgment.           Wilson, 
    714 N.W.2d at 254
    .             According to
    Opperman, Farm Bureau was contractually bound to pay the estate what it
    would have recovered from the tortfeasor if the tortfeasor had been fully
    insured.     
    652 N.W.2d at 142
    .            Thus, Farm Bureau was contractually
    responsible for the portion of the aggregated tort judgment (damages plus
    prejudgment interest) and postjudgment interest that the tortfeasor and her
    insurer did not pay.
    Farm Bureau did not pay the portion of the aggregated tort judgment
    and postjudgment interest that the tortfeasor and her insurer had not paid.
    It also did not pay any uncontested portion of the excess judgment, plus
    interest. Instead, Farm Bureau offered a lower amount in exchange for full
    satisfaction of its liability under the insurance contract.
    As a result, the estate sued Farm Bureau under the underinsured
    motorist coverage provision of the insurance contract. In a prior appeal, we
    held Farm Bureau was bound by the first judgment entry in the tort lawsuit.
    The district court entered a judgment in favor of the estate in the contract
    action, based on the first judgment in the tort action. Again, Farm Bureau
    did not pay the judgment, or any portion thereof, but asked the district court
    for a hearing to review the offset and interest issues. Eventually, the district
    court amended the judgment on December 19, 2006, and both parties
    appealed.
    issue until a case where it has been passed on by the district court and fully briefed by the
    parties.
    13
    During this entire time, the estate has been deprived of money to
    which it was entitled under the underinsured motorist contract.          The
    amount of money to which the estate was entitled under the contract is
    equal to the amount the tortfeasor would have been obligated to pay. This
    amount is the excess of the aggregated tort judgment, plus interest on the
    tort judgment according to Iowa Code section 535.3. Farm Bureau has not
    highlighted any principle that would stop the accrual of interest on the tort
    judgment. Likewise, Farm Bureau has failed to explain why interest is not
    payable as an element of damages under the underinsured motorist coverage
    provision of the contract.
    Farm Bureau’s argument that Iowa Code section 668.13 governs the
    award of interest in the tort lawsuit and section 535.3 governs the contract
    lawsuit is not technically incorrect. Yet, the argument ignores our rule in
    Opperman, that Farm Bureau has a contractual duty to pay the estate the
    damages, including interest, the estate would have received had the
    tortfeasor been financially solvent.
    While this case is factually distinct from Opperman in one way, we do
    not believe the distinction makes a legal difference.      Here, the estate
    proceeded against the tortfeasor and the decedent’s insurer in successive
    lawsuits.   In Opperman, the plaintiffs were injured in an automobile
    accident, sued the alleged tortfeasors, and later amended their petition to
    add their underinsured motorist insurance carrier as a defendant in the
    same action. 
    Id. at 140
    . Farm Bureau seizes on this distinction to suggest
    interest does not run on the contract lawsuit until a judgment is entered.
    Again, Farm Bureau is technically correct. Iowa Code section 535.3 does not
    start the accrual of interest on the contract judgment until the date of the
    judgment. 
    Id.
     at 143 n.1 (citing Schimmelpfennig v. Eagle Nat’l Assurance
    Corp., 
    641 N.W.2d 814
    , 815 (Iowa 2002)). Yet, Farm Bureau fails to explain
    14
    why the Opperman holding does not make the company responsible for the
    interest accruing on the tort judgment as damages under the contract.
    In Opperman, we held the plaintiffs were entitled to interest from the
    date of the original tort lawsuit until judgment was entered on the contract
    claim against the underinsured motorist carrier. Id. at 143. When judgment
    was entered on the contract action, we held the underlying damages award
    and the prejudgment interest should be aggregated and then draw interest
    under Iowa Code section 535.3, just like any civil judgment. Id. We noted
    that the prejudgment interest is part of the plaintiff’s damages in the
    contract action. Id. We also rejected an argument that the award of interest
    should turn on whether the plaintiff sued the tortfeasor and the
    underinsured motorist carrier in the same lawsuit or in successive lawsuits.
    Id. at 142.
    While that procedural distinction does require a slightly different
    calculation in this case, we do not believe it prevents the fundamental
    holding of Opperman from applying to the facts here.          The purpose of
    allowing interest on the aggregated tort judgment is “to encourage prompt
    payment and to compensate the plaintiff for another’s use of his or her
    money.” 44B Am. Jur. 2d Interest & Usury § 40, at 63–64 (2007). Thus,
    Iowa Code section 535.3, like any other postjudgment interest statute, is
    “designed to eliminate the financial incentive or disincentive to appeal and to
    ensure that a judgment creditor whose satisfaction is delayed because of an
    unsuccessful appeal receives the time value of the money judgment.” Id. at
    64.
    This rationale for section 535.3 and our holding in Opperman combine
    to support a conclusion that Farm Bureau owed the excess of the aggregated
    tort judgment along with interest on that judgment until a judgment was
    entered in this contract case. A contrary holding would amount to a windfall
    15
    to Farm Bureau, would deprive the estate of the time value of the tort
    judgment, and would provide an incentive for underinsured motorist
    insurance carriers to delay payment of money owed by engaging in
    protracted litigation.   On the date judgment was entered in this contract
    action, the damages due under the insurance contract—i.e., the excess of
    the aggregated tort judgment and postjudgment interest—were converted
    into a judgment on the contract and interest began to accumulate on the
    contract judgment according to section 535.3.
    The district court suspended accumulation of interest from the date of
    the first appeal in this suit until our resolution on appeal. The district court
    relied on Muchmore Equipment, Inc. v. Grover, 
    334 N.W.2d 605
     (Iowa 1983).
    There, we noted “[t]he assessment of interest on judgments may be affected
    by an appeal.”    Muchmore Equip., Inc., 
    334 N.W.2d at 610
    .           Yet, we were
    referring to the ability of an appeal of a judgment to affect the accumulation
    of interest on the very same judgment.         In this case, the first appeal was
    interlocutory and occurred before the judgment on the contract case was
    first entered on July 3, 2006.     Accordingly, the interest suspended by the
    district court was the postjudgment interest on the underlying tort
    judgment.      Thus, Muchmore Equipment cannot apply to suspend the
    accumulation of interest on the underlying tort judgment in this contract
    case because the underlying tort judgment was not on appeal.                    More
    importantly,   the   district   court’s   decision   to   stay   or   suspend    the
    accumulation of postjudgment interest in this case directly contradicts the
    purposes of postjudgment interest we highlighted earlier.
    While postjudgment interest on the tort judgment and contract
    judgment are both calculated pursuant to Iowa Code section 535.3, the rate
    is variable over time, so we must determine the appropriate date to use as
    the date of judgment in the contract case. On remand from our decision in
    16
    the first appeal in this contract lawsuit, the district court first entered
    judgment on July 3, 2006. The parties then briefed and argued the issue,
    and the district court amended the judgment on December 19, 2006.
    Thereafter, both parties appealed the judgment.         For this reason, our
    decision in Muchmore Equipment is pertinent to the calculation of
    postjudgment interest due on the contract judgment.              In Muchmore
    Equipment, we held,
    when a judgment is modified on appeal and the only action
    required in the trial court is compliance with the mandate of the
    appellate court, the interest runs from the date of the original
    judgment; however, when a judgment is reversed the interest is
    not generally computed and accrued during the pendency of the
    appeal.
    
    Id. at 610
    .    Thus, the question is whether our decision here requires a
    modification or a reversal of the contract judgment.
    The district court was correct in entering judgment for the estate, as
    mandated by our previous appellate decision.           Indeed, Farm Bureau
    concedes it owes some amount of the excess tort judgment under the
    contract of insurance that is the subject of this lawsuit. Thus, Farm Bureau
    is not actually arguing for vacation of the judgment.     Instead, the parties
    only argue over the legal principles applied to calculate the amount of the
    judgment.     Consequently, we are merely modifying a judgment correctly
    entered.    As such, interest on the contract case should run from, and be
    calculated according to, the date of the original judgment entry, July 3,
    2006.
    Finally, the estate takes umbrage with the apparent way in which the
    district court deducted payments made. While the district court’s order does
    not clearly reflect how the district court applied the payments and offsets,
    our Opperman decision dictates how they will be applied on remand:
    17
    As each payment . . . was received by the plaintiffs, the amount
    of principal on which interest was computed should be reduced
    by those amounts as of the time the payments were received. All
    payments credited to [the insurer] shall first be credited to the
    interest then due and the balance, if any, to principal.
    Opperman, 
    652 N.W.2d at
    143 (citing 47 C.J.S. Interest & Usury § 74, at 164
    (explaining “United States rule” applies payments first to interest)).
    V. Conclusion.
    Farm Bureau is entitled to set off the entire $5000 medical payment
    coverage benefits it paid from the amount owed under the underinsured
    motorist coverage provision of the insurance policy, as provided in the
    insurance contract. Prejudgment interest began to accumulate on the tort
    damages when the estate filed the tort lawsuit on February 7, 2000. When
    judgment was entered in the underlying tort lawsuit on February 6, 2002,
    the accumulated prejudgment interest was aggregated with the tort
    judgment and the aggregated judgment began to draw postjudgment interest
    under Iowa Code section 535.3, just like any civil judgment. Postjudgment
    interest accumulated on the tort judgment until those sums became the
    measure of damages in this contract lawsuit on July 3, 2006. As of July 3,
    2006, the aggregated tort judgment and accumulated postjudgment interest
    were again aggregated and began to draw interest under Iowa Code section
    535.3. We affirm the district court’s July 3, 2006 judgment and remand for
    modification consistent with this opinion.
    AFFIRMED AS MODIFIED; REMANDED WITH INSTRUCTIONS.