KRAVITCH, Senior Circuit Judge:
This case, brought under the Employee Retirement Income Security Act of 1974 (“ERISA”), 29 U.S.C. §§ 1001-1461, presents questions of subject matter jurisdiction, federal preemption, and statute of limitations.
Blue Cross and Blue Shield of Alabama (“Blue Cross”) sued Doyle G. Sanders and Tina M. Sanders (“the Sanderses”) under ERISA, 29 U.S.C. § 1132(a)(3)(B). The district court denied summary judgment to the Sanderses and granted summary judgment to Blue Cross.
See Blue Cross & Blue Shield of Ala. v. Sanders,
974 F.Supp. 1416 (N.D.Ala.1997). We affirm.
I.
From June 1990 to May 1992, the Sanders-es were participants in a health benefits plan (“the Plan”) offered through Mr. Sanders’s employer, the Nichols Research Corporation (“NRC”). The Plan, an “employee welfare benefit fund” under 29 U.S.C. § 1002(1), was self-funded by NRC, which paid the cost of all claims approved by Blue Cross, the “Claims Administrator” under the terms of the Plan.
See
Plan at 1,- § I, ¶ 2.
The version of the Plan at issue here was executed on August 23, 1991, with a retroactive effective date of January 1, 1991. The “Subrogation” provision of the Plan stated in part:
If the Claims Administrator pays or provides any benefits for a Member under this Plan, it is
subrogated
to all rights of recovery which that Member has in contract, tort or otherwise against any person or organization for the amount of benefits paid- or provided. That means that the Claims Administrator may use the Member’s right to recover money from that other person or organization.
Separate from and in addition to the Claims Administrator’s right of subrogation, if an Employee or a member of his family recovers money from the other person or organization for any injury or condition for which benefits were provided by the Claims Administrator, the Member agrees to
reimburse
the Claims Administrator from the recovered money that amount of benefits the Claims Administrator has paid or provided.,.. The right to reimbursement of the Claims Administrator comes first even if the Member is not paid for all of his claim for damages ... or if the payment he receives is for, or is described as for, his damages (such- as personal injuries) for other than health care expenses....
Plan at 38, § XI — Subrogation, ¶¶ 1-2 (emphasis in original).
In March 1991, Mrs. Sanders was injured in an automobile accident, which resulted in various medical expenses. Blue Cross authorized the Plan to pay medical providers a total of $12,678.69 for these expenses. In November 1991, the Sanderses filed suit in Alabama state court against both the owner and the driver of the vehicle. The suit did not include any claim for medical expenses. The Sanderses won a default judgment, which was satisfied by a payment of $200,000 in October 1992. They did not notify Blue Cross about the judgment, but Blue Cross, upon learning of the judgment, requested that they reimburse the Plan in the amount of $12,678.89. They refused.
In April 1996, Blue Cross, on behalf of the Plan, sued the Sanderses in federal district court under 29 U.S.C. § 1132(a)(3)(B). Section 1132(a)(3) states in part:
A civil action may be brought ... by a participant, beneficiary, or fiduciary (A) to enjoin any act or practice which violates any provision of this subchapter or 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 this subchapter or the terms of the plan.
In its complaint, Blue Cross requested that the court: (1) pursuant to 29 U.S.C. § 1132(a)(3)(B)(i), issue a declaratory judgment interpreting Section XI of the Plan to require,
inter alia,
that the Sanderses reimburse the Plan the amount of $12,678.89; and (2) pursuant to 29 U.S.C. § 1132(a)(3)(B)(ii), enforce Section XI of the Plan and obtain reimbursement from the Sanderses in the amount of $12,678.89.
In their answer, the Sanderses admitted that Blue Cross was a fiduciary seeking equitable relief under 29 U.S.C. § 1132(a)(3).
See
Answer at 2, ¶ 4 (“The Defendants admit the allegations of paragraphs 1 through 7 except this action is not prosecuted by Nichols Research Corporation’s Employee’s Health Benefit Plan, the real party in interest, as required by Rule 17, Federal Rules of Civil Procedure.”); Complaint at 2, ¶ 5 (stating that the court had subject matter jurisdiction under 29 U.S.C. § 1132(a)(3) because
the action was brought by a fiduciary under an employee welfare benefit plan to enforce provisions of the plan);
id.
at ¶ 3 (stating that Blue Cross was a Plan fiduciary with standing to bring an action under 29 U.S.C. § 1132(a)(3)); Answer at 2-3, ¶¶ 3(c), 6, 12 (stating that Blue Cross was seeking “equitable” relie
x).
The parties filed cross-motions for summary judgment. The district court denied summary judgment to the Sanderses and granted summary judgment to Blue Cross.
See Blue Cross & Blue Shield of Ald. v. Sanders,
974 F.Supp. 1416 (N.D.Ala.1997). In its order, the court determined that the Plan conflicted with Alabama’s common law of subrogation, but it ruled that ERISA preempted this state law.
Id.
at 1419-22. The court concluded: “Under the plan’s provisions on subrogation, the plan is entitled to recover the $12,678.69 that it has paid for Tina M. Sanders’ injuries.”
Id.
at 1422.
On appeal, the Sanderses argue that:
(1) the district court lacked subject matter jurisdiction over , this case brought under 29 U.S.C. § 1132(a)(3)(B) because:
(a) Blue Cross was not a “fiduciary” under 29 U.S.C. § 1132(a)(3); and
(b) the relief sought was not “equitable” under 29 U.S.C. § 1132(a)(3)(B);
(2) Alabama law prohibited Blue Cross, on behalf of the Plan, from recovering money from the Sanderses’ tort action;
(3) the instant action was barred by the statute of limitations; and '
(4) the reimbursement provision of the Plan should not apply retroactively to medical benefits that were paid on Mrs. Sanders’s behalf before the Plan was executed.
We analyze the Sanderses’ arguments
de novo,
applying the same legal standards that bound the district court and viewing all facts and any reasonable inferences therefrom in the light most favorable to the non-moving party.
See Hale v. Tallapoosa County,
50 F.3d 1579, 1581 (11th Cir.1995). Summary judgment is appropriate only when “there is no genuine issue of material fact and ... the moving party is entitled to judgment as a matter of law.” Fed.R.Civ.P. 56(c).
II.
The Sanderses contend that the district court lacked subject matter jurisdiction over the instant suit brought under 29 U.S.C. § 1132(a)(3)(B) because: (a) Blue Cross was not a “fiduciary” under 29 U.S.C. '§ 1132(a)(3); and (b) the relief sought was not “equitable” under 29 U.S.C. § 1132(a)(3)(B).
The Sanderses did not make this argument before the district court. Indeed, in their answer, they explicitly admitted that Blue Cross was a fiduciary seeking equitable relief.
See
Answer at 2-3, ¶¶ 3(c), 4, 6, 12. Notwithstanding , the Sanderses’ failure to raise the issue in the district court, this court may review subject matter jurisdiction
sua sponte. See Baltin v. Alaron Trading Corp.,
128 F.3d 1466, 1468 (11th Cir.1997) (stating that this court may conduct plenary review of subject matter jurisdiction and that this court has the obligation to inquire into subject matter jurisdiction whenever it may be lacking) (citations omitted);
see also
Fed. R.Civ.P. 12(h)(3) (“Whenever it appears by suggestion of the parties or otherwise that the court lacks jurisdiction of the subject matter, the court shall dismiss the action.”).
In determining whether the district court had subject matter jurisdiction, we re
spect the important distinction between the lack of subject matter jurisdiction and the failure to state a claim upon which relief can be granted. In
Bell v. Hood,
327 U.S. 678, 66 S.Ct. 773, 90 L.Ed. 939 (1946), the Court ruled that a claim alleged to arise under federal law should not be dismissed for lack of subject matter jurisdiction if “the right of the petitioners to recover under their complaint will be sustained if the Constitution and laws of the United States are given one construction and will be defeated if they are given another.”
Id.
at 685, 66 S.Ct. at 777. Thus, a federal court may dismiss a federal question claim for lack of subject matter jurisdiction only if: (1) “the alleged claim under the Constitution or federal statutes clearly áppears to be immaterial and made solely for the purpose of obtaining jurisdiction”;
or
(2) “such a claim is wholly insubstantial and frivolous.”
Id.
at 682-83, 66 S.Ct. at 776. Under the latter
Bell
exception, subject matter jurisdiction is lacking only “if the claim ‘has no plausible foundation, or if the court concludes that a prior Supreme Court decision clearly forecloses the claim.’”
Barnett v. Bailey,
956 F.2d 1036, 1041 (11th Cir.1992) (quoting
Olivares v. Martin,
555 F.2d 1192, 1195 (5th Cir.1977));
see also McGinnis v. Ingram Equipment Co., Inc.,
918 F.2d 1491, 1494 (11th Cir.1990) (en banc) (“The test of federal jurisdiction is not whether the cause of action is one on which the claimant can recover. Rather the test is whether ‘the cause of action alleged is so patently without merit as to justify ... the court’s dismissal for want of jurisdiction.’ ”) (quoting
Dime Coal Co. v. Combs,
796 F.2d 394, 396 (11th Cir.1986)).
Under the reasoning of
Bell
and its progeny, federal subject matter jurisdiction exists in this case as long as Blue Cross
plausibly
is a “fiduciary,”
see
29 U.S.C. § 1132(a)(3), seeking “equitable relief,”
see
29 U.S.C. § 1132(a)(3)(B). Blue Cross plainly satisfied both the “fiduciary”
and “equitable relief’
elements of this inquiry. Ac
cordingly, because Blue Cross’s ERISA claims are neither “immaterial and made solely for the purpose of obtaining jurisdiction” nor “wholly insubstantial and frivolous,”
see Bell,
at 682-83, 66 S.Ct. at 776, we hold that the district court properly exercised jurisdiction over the case,
see Health Cost Controls v. Skinner,
44 F.3d 535, 537-38 (7th Cir.1995) (ruling that the district court had subject matter jurisdiction over an action brought by a fiduciary to enforce reimbursement rights under 29 U.S.C. § 1132(a)(3); concluding that the district court’s holding that the remedy sought was not equitable “does not negate the existence of federal subject matter jurisdiction, but rather indicates that [the plaintiff] may have failed to state” a claim upon which relief can be granted);
Brule v. Southworth,
611 F.2d 406, 409 (1st Cir.1979) (holding that subject matter jurisdiction existed because plaintiff’s claim was not frivolous or insubstantial).
Furthermore, we need not determine whether Blue Cross failed “to state a claim upon which relief can be granted.” Fed.R.Civ.R. 12(b)(6). As this court has held, “[T]he failure to state a claim is not a jurisdictional question.”
Gholston v. Hous. Auth. of City of Montgomery,
818 F.2d 776, 781 (11th Cir.1987). Thus, although we may determine
sua sponte
whether subject mat
ter jurisdiction .exists, we will not decide whether the plaintiff failed to state a claim unless the defendant preserved that defense in the district court pursuant to Fed.R.Civ.P. 12(h)(2).
See Brule,
611 F.2d at 409 (“Having neglected to assert the defense of failure to state a claim below, defendants have waived their right to assert it now.”);
see also Dean Witter Reynolds, Inc. v. Fernandez,
741. F.2d 355, 360-61 (11th Cir.1984) (declining to consider a defense not raised in the district court except under extraordinary circumstances). .
As noted
supra,
the Sanderses in the district court conceded that Blue Cross is a fiduciary and that Blue Cross’s reimbursement action is equitable. Although the Sand-erses did include in their answer the naked assertion that Blue Cross failed to state a claim,
see
Answer at 1, ¶ 1 (“The complaint fails to state a claim against Defendants upon which relief can be granted.”), the Sanderses waived the
particular
failure to state a claim defense that is implicit in their subject matter jurisdiction argument — namely, the defense that Blue Cross is not a “fiduciary,”
see
29 U.S.C. § 1132(a)(3), seeking “equitable relief,”
see
29 U.S.C. § 1132(a)(3)(B).
See Miller v. Cudahy Co.,
858 F.2d 1449, 1460 (10th Cir.1988) (holding that the mere recital of the defense of failure to state a claim in defendant’s answer was insufficient to preserve the issue for appellate review).
Because the Sanderses effectively waived the defense, this court will not determine whether Blue Cross stated a claim upon which relief can be granted. As the First Circuit reasoned in
Brule:
While the [defendant’s] argument is presented as jurisdictional, it is plain that its underpinnings rest on the contention that plaintiffs failed to state a claim on which relief could be granted, and we think it fatal that defendants never asserted any such ground in the district court, either before or during trial. Having neglected to assert the defense of failure to state a claim below, defendants have waived their right to assert it now. Defendants now wish to breathe new life into their waived defense of failure to state a claim by presenting it as a challenge to the court’s subject matter jurisdiction — the latter being an issue which, of course, neither the parties nor the court could waive. We see no merit in this approach,
611 F.2d 406, 409 (1st Cir.1979);
see also McGinnis v. Ingram Equipment Co., Inc.,
918 F.2d 1491, 1494 (11th Cir.1990) (en banc) (holding that defendant waived the right to assert a failure to state a claim; stating that issue was not jurisdictional);
Brown v. Trustees of Boston Univ.,
891 F.2d 337, 356-57 (1st Cir.1989) (same). Thus, the question of whether Blue Cross
actually
is a “fiduciary,”
see
29 U.S.C. § 1132(a)(3), seeking “equitable relief,”
see
29 U.S.C. § 1132(a)(3)(B), is not properly before this court.
III.
The Sanderses also contend that Alabama law prohibited Blue Cross from recovering money from the Sanderses’ state court tort judgment. In our view, this argument is based on a misreading of Alabama law and a misunderstanding of the wide scope of ERISA preemption.
Under Alabama common law, an insurer’s subrogation right, whether equitable or contractual, does not arise until the insured has been fully compensated for his loss.
See CNA Ins. Cos. v. Johnson Galleries of Opelika, Inc.,
639 So.2d 1355, 1357 (Ala.1994);
Powell v. Blue Cross & Blue Shield of Ala.,
581 So.2d 772, 776 (Ala.1990). The insurer has the burden of proving that the insured has been fully compensated.
See Complete Health, Inc. v. White,
638 So.2d 784, 787 (Ala.1994).
A state procedural rule supplements Alabama’s substantive law of subrogation. According to Ala. R. Civ. P. 17(a),
Every action shall be prosecuted in the name of the real party in interest____ In subrogation cases, regardless of whether subrogation has occurred by operation of law, assignment, loan receipt, or otherwise, if the subrogor no longer has a pecuniary interest in the claim, the action shall be brought in the name of the subrogee. If the subrogor still has a pecuniary interest in the claim, the action shall be brought in the names of the subrogor and the subro-gee.
Although the Sanderses concede that ERISA preempts Alabama’s common law of subrogation,
see
Sanderses’ Br. at 27, they nonetheless contend that Alabama’s
procedural
subrogation rule, Ala. R. Civ. P. 17(a), precludes the instant suit. They assert:
The Plan was subrogated immediately upon payment of the medical benefits to the medical providers. Therefore, the Plan in the present case, or Blue Cross on its behalf, was the real party in interest with the sole right to maintain its subrogation ease against the tort feasor pursuant to Rule 17(a) of the Alabama Rules of Civil Procedure.
Sanderses’ Br. at 27.
The Sanderses thus interpret Ala. R. Civ. P. 17(a) to mean that because Blue Cross had subrogation rights, it could sue
only
the third-party tortfeasor. The Plan, however, expressly provided that Blue Cross, as Claims Administrator, had the right to
reimbursement
“[s]eparate from and in addition to the Claims Administrator’s right of subro-gation.” Plan at 38, § XI — Subrogation, ¶ 2. In order for the Sanderses to prevail, therefore, this court would have to hold that Ala. R. Civ. P. 17(a) precludes a party with contractual subrogation rights from pursuing its contractual reimbursement rights.
We reject the Sanderses’ argument for two reasons. First, their interpretation of Ala. R. Civ. P. 17(a) is unpersuasive. We have identified no authority holding -that under Rule 17(a) a party with both subrogation and reimbursement rights may only pursue its subrogation rights. The plain language of the rule addresses only the proper form of a subrogation action,
not
whether a subrogee may pursue an independent action based on its right to reimbursement.
Second, even if we were to accept the Sanderses’ interpretation of Ala. R. Civ. P. 17(a), we would hold that ERISA preempts this state law. As interpreted by the Sanderses, Rule 17(a) would preclude Blue Cross from obtaining reimbursement under the Plan.
See
Plan, Section XI, ¶ 2. Rule 17(a) thus would fall within the scope of ERISA preemption.
See
29 U.S.C. § 1144(a) (stating that, except as provided in the saving clause, ERISA supersedes all state laws that “relate to any employee benefit plan”);
Pilot Life Ins. Co. v. Dedeaux,
481 U.S. 41, 47, 107 S.Ct. 1549, 1549, 95 L.Ed.2d 39 (1987) (stating that ERISA preemption has an “expansive sweep” and is not limited to state laws designed specifically to affect employee benefit plans);
cf. FMC Corp. v. Holliday,
498 U.S. 52, 111 S.Ct. 403, 112 L.Ed.2d 356 (1990) (holding that state subrogation law related to employee benefit plans because it prohibited plans from being structured in a manner requiring reimbursement in the event of recovery from a third party).
Moreover, ERISA’s saving clause, 29 U.S.C. § 1144(b)(2)(A), does not protect Ala. R. Civ. P. 17(a) from preemption. The saving clause states that, except as provided in the déemer clause, “nothing in this subchapter shall be construed to exempt or reheve any person from any law of any State which regulates insurance, banking, or securities.” 29 U.S.C. § 1144(b)(2)(A). In
Smith v. Jefferson Pilot Life Ins. Co.,
14 F.3d 562, 569 (11th Cir.1994), this court explained that the saving clause only applies if the state law meets both prongs of the following two-part test: (1) "the state law must regulate insurance within a common-sense view of the word ‘regulate,’”
id.,
and thus the law “must not just have an impact on the insurance industry, but must be specifically directed toward that industry,”
Pilot Life,
481 U.S. at 50, 107 S.Ct. at 1554; and (2) the state law must regulate the “business of insurance,” as that term is defined by cases interpreting the scope of the McCarran-Ferguson Act, 15 U.S.C. §§ 1011-1015,
see Jefferson Pilot Life,
14 F.3d at 569 (citing
Metropolitan Life Ins. Co. v. Travelers Ins. Co.,
471 U.S. 724, 743, 105 S.Ct. 2380, 2391, 85 L.Ed.2d 728 (1985)). As this court has held, a state law satisfies the second part of this test if the law: (a) “has the effect of transferring or spreading a policyholder’s risk”; (b) “impacts an integral part of the policy relationship between the insurer and the insured”; and (c) “is directed only at entities within the insurance industry.”
See Jefferson Pilot Life,
14 F.3d at 569 (citing
Metropolitan Life,
471 U.S. at 743, 105 S.Ct. at 2391).
Ala. R. Civ. P. 17(a) fails both prongs of this two-part test. Because the rule applies
to
all
subrogation actions, it is neither “specifically directed toward [the insurance] industry,”
Pilot Life,
481 U.S. at 50, 107 S.Ct. at 1554, nor “directed only at entities within the insurance industry,”
Jefferson Pilot Life,
14 F.3d at 569. Accordingly, the saving clause does not apply.
Moreover, even if the saving clause were applicable, the deemer clause, 29 U.S.C. § 1144(b)(2)(B),
would exempt the instant self-funded plan from Ala. R. Civ. P. 17(a). As the Court ruled in
FMC Corp.,
“State laws that directly regulate insurance are ‘saved’ but do not reach self-funded employee benefit plans because the plans may not be deemed to be insurance companies, other insurers, or engaged in the business of insurance for purpose of such state laws.” 498 U.S. at 61, 111 S.Ct. at 409;
see id.
at 65, 111 5.Ct. at 411 (holding that ERISA preempted the application of a state anti-subrogation law to an employer’s self-funded health care plan). The Sanderses’ reliance on Ala. R. Civ. P. 17(a) therefore is misplaced.
IV.
The Sanderses also contend that this case is governed by a two-year statute of limitations. Because Blue Cross’s cause of action for reimbursement presumably arose when the Sanderses received payment on the default judgment in October 1992, a two-year limitations period would bar the instant suit, which Blue Cross brought in April 1996.
ERISA does not specify a limitations period for a fiduciary’s suit against a participant under 29 U.S.C. § 1132(a)(3) to enforce a reimbursement provision of a plan.
In an ERISA action with no congressionally mandated limitations period, the district court “must define the essential nature of the ERISA action and apply the forum state’s statute of limitations for the most closely analogous action.”
Byrd v. MacPapers,
961 F.2d 157, 159 (11th Cir.1992);
see also Wilson v. Garcia,
471 U.S. 261, 266-67, 105 S.Ct. 1938, 1942, 85 L.Ed.2d 254 (1985) (stating that when Congress has not established a time limitation for a federal cause of action,
courts should adopt a local time limitation as federal law if it is not inconsistent with federal law or policy to do so). The characterization of the federal claim for statute of limitations purposes “is derived from the elements of the cause of action, and Congress’ purpose in providing it. These, of course, are matters of federal law.”
Byrd,
961 F.2d at 159 (citing
Clark v. Coats & Clark,
865 F.2d 1287, 1241 (11th Cir.1989)).
We therefore look to Alabama law for the relevant limitations period. As a matter of first impression for this court, we hold that a fiduciary’s action to enforce a reimbursement provision pursuant to 29 U.S.C. § 1132(a)(3) is most closely analogous to a simple contract action brought under Alabama law. Accordingly, we apply Alabama’s six-year statute of limitations for simple contract actions,
see
Ala.Code § 6-2-34(9),
and reject the Sanders’s proposed two-year limitations period.
V.
Finally, the Sanderses argue that the reimbursement provision of the Plan should not apply retroactively to medical benefits paid to Mrs. Sanders before the Plan was executed.
The Sanderses did not raise this argument in the district court. Under exceptional circumstances, this court may consider an issue not raised in the district court.
No such circumstance exists here, however, and we therefore deem this issue waived.
VI.
We reject all arguments raised by the Sanderses as either meritless or waived. Accordingly, the district court’s grant of summary judgment to Blue Cross is
AFFIRMED.