Rush Prudential HMO, Inc. v. Moran, 536 U.S. 355 (2002)
Rush Prudential HMO v. Moran is a cornerstone ERISA preemption case at the intersection of federal benefits law and state regulation of managed care.
Does ERISA preempt an Illinois statute requiring HMOs to provide and abide by an independent medical-necessity review of denied treatments, or is the statute a law that regulates insurance saved from preemption and consistent with ERISA's exclusive civil enforcement remedial structure?
Under ERISA § 514(a), state laws that "relate to" employee benefit plans are preempted. However, § 514(b)(2)(A) (the saving clause) preserves from preemption state laws that "regulate insurance," while § 514(b)(2)(B) (the deemer clause) prevents states from deeming an employee benefit plan itself to be an insurer. To determine whether a law "regulates insurance," courts apply a common-sense view, informed by the McCarran-Ferguson factors: whether the law is specifically directed at entities engaged in insurance; whether it substantially affects the risk-pooling arrangement between insurer and insured or is integral to the policy relationship; and whether it is limited to insurers. Even if saved, a state law cannot provide an alternative or supplemental remedial scheme that conflicts with ERISA's exclusive civil enforcement provision, § 502(a) (Pilot Life). But state laws may impose insurance rules that affect the content, processing, or interpretation of insured ERISA plans so long as the remedy remains through § 502(a)(1)(B) to recover benefits due under the plan (Metropolitan Life; UNUM v. Ward).
The Illinois HMO Act's independent medical-necessity review requirement is a law regulating insurance saved from ERISA preemption. It does not conflict with ERISA's exclusive civil enforcement scheme because it does not create a separate cause of action or additional remedies; it simply supplies an insurance rule and review mechanism that govern benefit determinations enforceable under ERISA § 502(a)(1)(B).
Rush Prudential clarifies that state external review and similar patient-protection statutes directed at insurers can coexist with ERISA. It anchors two core lessons for students: (1) the saving clause preserves robust state regulation of insured ERISA plans when the law truly regulates insurance, and (2) ERISA's exclusive remedies preempt alternative damages schemes but do not bar state rules that shape plan terms or claim procedures so long as enforcement remains under § 502(a)(1)(B). The case is frequently paired with Metropolitan Life, Pilot Life, and UNUM v. Ward to map the preemption landscape and is a foundational decision for understanding modern health-insurance regulation and managed-care oversight.