Opinion for the court filed by Circuit Judge HENDERSON.
Alistaire Moore, the daughter of William and Judith Moore (collectively, Moores), was severely injured in an automobile accident and as a result required extensive medical care. She is the beneficiary of a health insurance plan administered by CapitalCare, Inc. and Blue Cross & Blue Shield of the National Capital Area (BCBS) (collectively, CC/BCBS). CC/ BCBS paid over $200,000 in accident-related benefits on Alistaire’s behalf. Alistaire also recovered a $1.3 million settlement for her injuries from a personal injury lawsuit. In 1994, the Moores instituted this action under the Employee Retirement Income Security Act of 1974 (ERISA), 29 U.S.C. §§ 1001 et seq., alleging that CC/BCBS failed to pay benefits due under the plan. CC/BCBS . countersued under ERISA, claiming that, pursuant to a subrogation clause in the plan, it was entitled to reimbursement because Alistaire received compensation from a third party for her injuries. The district court awarded the Moores $72,083.52 in unpaid benefits, awarded CC/BCBS an equitable lien of $194,274.72 against the settlement funds and denied both parties’ motions for prejudgment interest and attorney’s fees. The Moores appeal the grant of the equitable lien against the settlement proceeds claiming that, because Alistaire was not “made whole” for her injuries, CC/BCBS are not entitled to reimbursement. We disagree, concluding that Alistaire’s health insurance plan expressly provides for reimbursement in the event of partial recovery from a third party. Both the Moores and CC/BCBS appeal the denial of prejudgment interest and attorney’s fees, which we reverse and remand as to all parties.
I.
In 1991, the Moores purchased a group benefit plan (ERISA plan) from BCBS and its wholly-owned subsidiary, CapitalCare. The ERISA plan included various contracts that together provided “dual option coverage.” The ERISA plan’s dual option coverage allowed an insured to seek medical attention at his option either from the HMO side through CapitalCare or from the indemnity side through BCBS. The ERISA plan also included a subrogation clause, by which an injured beneficiary agreed to reimburse CC/BCBS for medical expenses the ERISA plan paid if he recovered compensation from a third party for his injuries. 1
*5 On September 10, 1992, Alistaire Moore sustained life-threatening injuries when the chauffeured car in which she was a passenger crashed. Her resulting medical care was lengthy and expensive. She is a beneficiary under the ERISA plan. After several years of wrangling with CC/BCBS over Alistaire’s healthcare expenses, the Moores initiated this lawsuit against CC/ BCBS in 1994. 2 The suit, brought under section 502(a)(1)(B) of ERISA, see 29 U.S.C. § 1132(a)(1)(B), 3 sought unpaid benefits allegedly due under the ERISA plan.
During discovery, CC/BCBS learned that Alistaire had obtained a $1.3 million settlement from a personal injury suit that was filed on her behalf against the chauffeur and his insurers. CC/BCBS believed that the proceeds of the settlement were held in an irrevocable trust for the benefit of Alistaire M. Moore (Trust) with Judith Deitz as the named trustee. 4 CC/BCBS then filed a counterclaim against the Moores, asserting their subrogation claim. CC/BCBS also filed a third party complaint against Alistaire M. Moore, the Trust and Judith Deitz Moore as trustee, seeking reimbursement for the benefits they had paid for Alistaire’s care. The Moores never responded to CC/BCBS’s counterclaim. The third party defendants admitted that the Trust had been created with and/or contained funds from the settlement. Pis.’ Answer to Third Party Compl. ¶ 3, reprinted at Supplemental Appendix (SA) 124.
Following a' bench trial, the district court concluded that CC/BCBS had failed to pay the Moores benefits due under ERISA but that CC/BCBS also had a sub-rogation right to the settlement proceeds to the extent they had paid benefits to Alistaire or on her behalf.
See Moore v. Capitalcare, Inc.,
n.
A.
We turn first to the Moores’ challenge of the district court’s subrogation ruling. Originally, the Moores had argued that the award was improper under ERISA section 502(a)(3), see 29 U.S.C. § 1132(a)(3), because CC/BCBS seek legal relief, not the “other appropriate equitable relief’ authorized therein. ERISA section 502(a)(3) authorizes the ERISA plan fiduciary “(A) to enjoin any act or practice which violates ... the terms of the plan, or (B) to obtain other appropriate equitable relief (i) to redress such violations or (ii) to enforce any provisions of ... the terms of the plan.” Id. (emphasis added).
At the time of oral argument on November 1, 2005, the circuits were split regarding an ERISA fiduciary’s subrogation right under section 502(a)(3).
7
Shortly af
*7
ter oral argument, the United States Supreme Court granted certiorari in
Mid Atlantic Medical Services, LLC v. Sereboff,
' The High Court affirmed the Fourth Circuit. It first considered whether the type of relief Mid Atlantic sought was equitable or legal.
See Sereboff v. Mid Atlantic Med. Servs., Inc.,,
— U.S. —, —,
We therefore turn to the Moores’ only remaining challenge to the subrogation ruling: that CC/BCBS are not entitled to reimbursement because Alistaire has not been made whole by the settlement. The Moores urge us to adopt, as a matter of federal common law, the make whole doctrine as a default rule of construction. 9 Appellants’ Suppl. Br. at 4. The make whole doctrine is an equitable insurance *9 law principle and can be summarized as follows:
[I]n the absence of contrary statutory law or valid contractual obligations to the contrary, the general rule under the doctrine of equitable subrogation is that where an insured is entitled to receive recovery for the same loss from more than one source, e.g., the insurer and the tortfeasor, it is only after the insured has been fully compensated for all of the loss that the insurer acquires a right to subrogation, or is entitled to enforce its subrogation rights. The rule applies as well to instances in which the insured has recovered from the third party and the insurer attempts to exercise its subrogation right by way of reimbursement against the insured’s recovery.
16 Lee R. Russ et. al,
Couch on Insurance
§ 223:134 (3d ed.2000) (footnotes omitted) (emphasis added). At least three circuits have adopted the make whole doctrine into federal common law as a default rule.
See, e.g., Copeland Oaks v. Haupt,
*10
It is undisputed that the $1.3 million settlement did not fully compensate Alistaire for her injuries. Nevertheless we need not decide whether to adopt the make whole doctrine as a default rule because the ERISA plan unambiguously establishes a plan priority to any third party recovery the beneficiary obtains regardless whether the beneficiary has been made whole by the recovery.
10
Subsection “a” of the subrogation provision provides the ERISA plan “shall ... succeed to
any rights of recovery of a Participant ”
and subsection “b” provides that the “Participant shall pay the Corporation
all amounts
recovered by suit, settlement, or otherwise from any third party or his insurer
to the extent of the benefits provided by this Contract.” See Moore,
Some circuits have interpreted similar language sufficiently unambiguous to override the default make whole doctrine. For example, in
Sunbeam-Oster Co.,
the Fifth Circuit found unambiguous a provision stating “ ‘[sjubrogation allows the Plan to recover duplicate benefit amounts ....,’ and added by way of explanation that, ‘[i]f the plan has already paid benefits, it has the right to recover payment from you.’ ”
*11
Moreover, even if we found the subrogation language ambiguous, that would not end the matter. In
Firestone Tire & Rubber Co. v. Bruch,
B.
The Moores claim that the district court abused its discretion in denying them prejudgment interest on the award of $92,083.52 in unpaid benefits against CC/ BCBS. ERISA does not expressly provide for prejudgment interest. In enacting ERISA, however, the Congress intended the courts to develop a body of federal law “ ‘to deal with issues involving rights and obligations under private welfare and pension plans.’ ”
Pilot Life Ins. Co. v. Dedeaux,
We agree with the circuits that have held that prejudgment interest on unpaid ERISA benefits is
presumptively
appropriate.
See, e.g., Fritcher v. Health Care Serv. Corp.,
We believe the district court abused its discretion in denying the Moores prejudgment interest on the $72,083.52 in unpaid benefits it awarded them. Although CC/BCBS claim that the Moores exhibited bad faith by failing to supplement their responses to interrogatories, discovery matters are more appropriately dealt with under Federal Rule of Civil Procedure 37 and, in any event, do not make an award of prejudgment interest inequitable.
CC/BCBS also claim that the district court erred in denying them prejudgment interest on the value of their equitable lien. Because a fiduciary may seek only “appropriate equitable relief,” 29 U.S.C. § 1132(a)(3), CC/BCBS’s ability to obtain prejudgment interest turns on whether their claim is fairly characterized as seeking equitable relief. We believe that it is. The Supreme Court in
Knudson
explicitly recognized that an accounting for profits — whereby a party that obtains a constructive trust may also “recover profits produced by the defendant’s use of that property, even if he cannot identify a particular res containing the profits sought to be recovered”— is “a form of. equitable restitution.”
Knudson,
C.
We finally consider each side’s claim that it is entitled to attorney’s fees. ERISA provides that “[i]n any action under this subchapter ... by a participant, beneficiary, or fiduciary, the court in its discretion may allow a reasonable attorney’s fee and costs of action to either party.” 29 U.S.C. § 1132(g)(1). In
Eddy v. Colonial Life Insurance Co. of America,
we laid out five factors the district court is to weigh in determining whether or not attorney’s fees are appropriate in an ERISA case: “(1) the losing party’s culpability or bad faith; (2) the losing party’s
*14
ability to satisfy a fee award; (3) the deterrent effect of such an award; (4) the value of the victory to plan participants and beneficiaries, and the significance of the legal issue involved; and (5) the relative merits of the parties’ positions.”
For the foregoing reasons, we affirm the district court’s grant to CC/BCBS of “an equitable lien in the amount of $194,274.72 upon the proceeds of any recovery from any third party by reason of the injury to Alistaire Moore,” see Moore, No. 94-1326, slip op. at 1-2 (D.D.C. July 20, 2004), reverse the denial of prejudgment interest and attorney’s fees to both sides and remand for further proceedings consistent with this opinion.
So ordered.
Notes
. The subrogation clause provides as follows:
12. Subrogation ....
a.To the extent that benefits for covered services are provided or paid under this Contract, the Corporation shall be subro-gated and succeed to any rights of recovery of a Participant for expenses incurred against any persons or organizations except insurers on policies of health insurance issued to and in the name of the Participant.
b. The Participant shall pay the Corporation all amounts recovered by suit, settlement, or otherwise from any third party or his insurer to the extent of the benefits provided by this Contract.
c. Attorneys’s [sic] fees, court costs, and any other costs expended in the course of *5 securing recovery by suit, settlement, or otherwise, shall be subtracted from the amount to be paid to the Corporation; the amount to be subtracted shall be as follows:
(1) If the case is settled out of court-one-quarter of the amount of benefits paid or to be paid for covered services; or
(2) If the case is settled as a result of litigation — one third of the amount of benefits paid or to be paid for the covered services.
Moore v. Capitalcare, Inc.,
.The Moores initially sued only CapitalCare; BCBS was later joined as a party-defendant pursuant to Federal Rule of Civil Procedure 19.
. Section 502(a)(1)(B) authorizes a beneficiary to bring a civil action "to recover benefits due to him under the terms. of his plan, to enforce his rights under the terms of the plan, or to clarify his rights to future benefits under the terms of the plan.” 29 U.S.C. § 1132(a)(1)(B).
. Deitz is apparently the maiden name of Judith Moore. She is referred to as Judith Deitz Moore in the Third Party Complaint. See 3d Party Compl. ¶ 3.
. The third party defendants, Alistaire Moore, the Trust and Judith Deitz Moore as trustee, do not appeal and thus are the appellees here.
. CC/BCBS also appeal the denial of their motion for an accounting. Appellees' Br. 35-37. They argue that an accounting is warranted in light of the Moores’ continued insistence that the settlement funds were “never segregated” and have "long since been dissipated,” Reply Mem. in Supp. of Pis.' Mot. for Recons, on Issue of Reimbursement/Subrogation ¶¶ 7-8, R. Doc. No. 200 — claims the Moores continue to press on appeal, see Appellants’ Br. 21-22 & n. 9; Appellants’ Reply Br. at 5-6. After oral argument, the Moores deposited $210,000 into the district court registry and stipulated that, if they lose on appeal, CC/BCBS may collect from the registry. Pis.' Opp’ns to Defs.' Mot. for Recons., Mot. for Prelim. Inj., & Mot. for Hr’g ¶ 1-2, R. Doc. No. 255.
. The United States Supreme Court has thrice interpreted the meaning of "appropriate equitable relief” as used in section 502(a)(3): first, in
Mertens v. Hewitt Associates,
In
Knudson,
the Court distinguished equitable claims for restitution' — embraced by section 502(a)(3) — and legal claims for restitution — not embraced by section 502(a)(3). In a claim for equitable restitution, the plaintiff may obtain "a constructive trust or an equitable lien, where money or property identified as belonging in good conscience to the plaintiff [can] clearly be traced to particular funds
*7
or property in the defendant's possession.”
Id.
at 213,
After
Knudson,
the circuits split over whether a fiduciary could enforce a subrogation provision under section 502(a)(3). The Fourth, Fifth, Seventh, Eighth and Tenth Circuits decided that if a plaintiff's request for reimbursement under ERISA section 502(a)(3) did not seek to impose personal liability but instead sought relief (such as a constructive trust or equitable lien) against identifiable funds in the actual or constructive possession of the insured, the relief was equitable in nature and therefore permitted under section 502(a)(3).
See Mid Atlantic Med. Servs., Inc. v. Sereboff,
. The order reads:
It is ORDERED, on the court’s own motion, that the parties submit supplemental briefs addressing the following questions.
1. The District Court awarded Capital-Care and BCBSNCA “an equitable lien in the amount of $194,274.72 upon the proceeds of any recovery from any third party by reason of the injury to Alistaire Moore that is the subject of this action in aid of [CapitalCare and BCBSNCA’s] equitable subrogation rights under ERISA.” Appellants’ Appx. at 69. This decision has been appealed by William Moore and Judith Moore, individually and in their capacities as parents and guardians of Alistaire Moore, but not by the Irrevocable Trust between Alistaire M. Moore, Grantor, and Judith Deitz, Trustee, nor by Judith Deitz in her capacity as trustee of that trust. What are the implications of the identities of the appellants for CapitalCare and BCBSNCA’s subrogation claim under ERISA § 502(a)(3), particularly in light of the Supreme Court’s decision in Sereboff v. Mid Atlantic Medical Services, Inc., - U.S. -,126 S.Ct. 1869 ,164 L.Ed.2d 612 (2006)?
2. Apart from the question above, does Sereboff have any other implications for CapitalCare and BCBCNCA’s subrogation claim under ERISA § 502(a)(3)?
3.What evidence is there in the record of the disposition of the proceeds of the settlement of the tort action in the Circuit Court for Baltimore County?
Moore v. CapitalCare, Inc., No. 04-7121 (D.C.Cir. June 22, 2006) (emphases in original).
. In Sereboff, the defendants asserted the make whole doctrine as an equitable defense but the Supreme Court rejected it, finding the defense inapplicable' and noting:
Mid Atlantic’s action to enforce the "Acts of Third Parties” provision qualifies as an equitable remedy because it is indistinguishable from an action to enforce an equitable lien established by agreement, of the sort epitomized by our decision in Barnes. Mid Atlantic need not characterize its claim as a freestanding action for equitable subrogation. Accordingly, the parcel of equitable defenses the Sereboffs claim accompany any such action are beside the point.
Sereboff,
In their supplemental brief, the Moores claim that their make whole doctrine argu *9 ment is similar to the Sereboffs' second argument — that is, CC/BCBS's claim is not ''appropriate” because Alistaire was not made whole — and thus Sereboff is not dispositive. Appellants' Suppl. Br. at 4. CC/BCBS respond that, in the district court, the Moores argued only the make whole doctrine as an equitable defense and thus Sereboff forecloses that argument. Appellees' Suppl. Br. at 5-6. They also contend that, as in Sereboff, the Moores waived the assertion that the equitable lien was not appropriate equitable relief. We need not decide the waiver issue because even assuming the Moores preserved the issue on appeal CC/BCBS are nonetheless entitled to reimbursement.
.The Moores do not argue that the subrogation provision is ambiguous nor do they challenge the district court ruling that "[t]he Plan provisions, when read in context, can only mean that the Plan is entitled to be reimbursed by the beneficiary all amounts that the Plan has paid to the beneficiary, or on her behalf, to the full extent that the beneficiary recovers from another source.”
Moore,
. Fields involved an Oklahoma state insurance law claim and was in federal court under diversity jurisdiction. The Tenth Circuit applied Oklahoma state law, which adopted the make whole doctrine as a default rule of construction.
. There is some conflict among the circuits regarding how clear a subrogation provision
*11
must be to supersede the default make whole doctrine. At least two courts have found similar provisions ambiguous because they did not contain an express disavowal of the make whole doctrine.
See, e.g., Copeland Oaks,
. We need not address further our sua sponte questions to the parties, see supra note 8, especially Question No. 3, in view of the fact that the Moores have now deposited $210,000 in the district court registry and have stipulated that CC/BCBS may collect from that fund if they prevail on appeal. See supra note 6. "[T]he implications of the identities of the appellants,” as noted in Question No. 1, see supra note 8, are no longer relevant because the Moores have dropped their section 502(a)(3) challenge to the subrogation ruling. See Appellants’ Supplemental Br. 3.
