Insured vs Self-Funded ERISA Plans: When State Law Protects Against Subrogation

James Wong — Founder & Pharmacist, LienScripts | March 29, 2026 | 7 min read

The distinction between fully insured and self-funded ERISA plans determines whether state anti-subrogation laws protect your PI client's settlement. This guide explains the deemer clause, how to identify plan funding type, and when California's made-whole doctrine still applies.

This post is for informational purposes only and does not constitute legal advice.

A fully insured ERISA health plan is subject to state insurance regulation through the "deemer clause" exception in ERISA section 514(b)(2)(A), which means state anti-subrogation laws and the made-whole doctrine can protect PI plaintiffs against the plan's recovery claims. A self-funded ERISA plan, by contrast, receives full federal preemption and is beyond the reach of state law protections.

• Fully insured ERISA plans purchase coverage from a licensed insurer, making them subject to state insurance regulation under the deemer clause
• Self-funded ERISA plans pay claims from employer assets, receiving complete ERISA preemption of state anti-subrogation laws
• Identifying the plan type at intake determines the entire subrogation defense strategy and settlement waterfall
• LienScripts pharmacy liens operate independently of ERISA plan type, shielding medication costs from subrogation regardless of funding structure
• According to James Wong, PharmD, founder of LienScripts, proactive lien enrollment at intake eliminates ERISA subrogation exposure on prescription medications entirely

The ERISA Preemption Framework and the Deemer Clause

ERISA section 514(a) broadly preempts state laws that "relate to" employee benefit plans. Standing alone, this language would strip every state insurance regulation from every employer health plan. But ERISA includes two critical exceptions that create a carve-out for certain plans.

The "savings clause" in section 514(b)(2)(A) provides that state laws regulating insurance are saved from preemption. This means state insurance regulations continue to apply to entities engaged in the business of insurance, including commercial insurers that underwrite employer health plans.

The "deemer clause" in section 514(b)(2)(B) provides that an employee benefit plan shall not be deemed an insurance company or engaged in the business of insurance for purposes of state insurance regulation. This prevents states from treating self-funded employer plans as insurers and subjecting them to state insurance laws.

The combined effect: when an employer purchases a health insurance policy from a licensed insurer (fully insured plan), the insurer remains subject to state insurance regulation through the savings clause. When an employer funds claims directly out of corporate assets (self-funded plan), the plan is deemed not to be insurance and escapes state regulation through the deemer clause.

[!KEY] The practical consequence for PI attorneys is binary: if the client's employer health plan is fully insured, California's made-whole doctrine and anti-subrogation protections may apply. If the plan is self-funded, those state protections are preempted and the plan's SPD language controls the subrogation analysis entirely.

How to Identify Plan Funding Type

Determining whether a plan is fully insured or self-funded requires examining the plan documents, not asking the client what insurance card they carry. A plan administered by Blue Cross or United may be either type. The TPA's name on the card does not indicate funding.

Step 1: Request the Summary Plan Description (SPD). Every ERISA plan must provide an SPD to participants upon request. Self-funded plans typically include language such as: "This Plan is self-funded by [Employer Name] and is not an insurance product." Fully insured plans reference the insurance carrier as the entity bearing financial risk.

Step 2: Check the Form 5500 filing. Employers with 100 or more participants must file Form 5500 annually with the Department of Labor. The filing identifies whether the plan is self-funded and lists insurance contracts if fully insured. These filings are publicly searchable at the DOL's EFAST2 database.

Step 3: Contact the TPA directly. If the SPD is ambiguous, call the claims administrator and ask: "Is this plan fully insured or self-funded?" The TPA is required to provide this information under ERISA's disclosure rules.

[!TIP] Large employers (500+ employees) are overwhelmingly self-funded. Small employers (under 50 employees) are almost always fully insured. The ambiguous zone is mid-size employers with 50 to 500 employees, where either funding type is common. Never assume based on employer size alone.

When State Law Protections Apply: Fully Insured Plans

When the client's plan is fully insured, the insurer's subrogation rights are governed by both the policy terms and applicable state insurance law. In California, this means several protective docitions come into play.

The made-whole doctrine. California courts have recognized that an insurer cannot enforce subrogation until the insured has been fully compensated for all damages. If the settlement represents less than full compensation, the insurer's subrogation interest is reduced or eliminated proportionally.

Anti-subrogation statutes. California Insurance Code provisions restrict certain subrogation practices by licensed insurers. These apply to fully insured ERISA plans through the savings clause because the commercial insurer underwriting the plan is subject to state insurance regulation.

Common fund doctrine. Even in the fully insured context, the insurer must typically contribute to the attorney fees that produced the recovery from which it seeks reimbursement. This reduces the net subrogation amount.

The combination of these protections often results in substantially reduced or eliminated subrogation recovery for fully insured plans, particularly in cases where the settlement does not fully compensate the plaintiff.

When State Law Fails: Self-Funded Plans

Self-funded ERISA plans receive the strongest preemption protection. Under the deemer clause, the plan cannot be treated as an insurer, so state insurance regulations do not apply. The consequences for PI plaintiffs are significant.

No made-whole doctrine. If the SPD's subrogation clause does not contain a made-whole limitation, the plan can demand full reimbursement regardless of whether the settlement compensates the plaintiff for all damages.

Plan language controls. Under US Airways v. McCutchen, 569 U.S. 88 (2013), the plan's express terms govern. If the SPD provides for dollar-for-dollar reimbursement from any third-party recovery, that language is enforceable under federal law.

Limited federal equitable relief. Where the SPD is silent on a specific issue, federal common law equitable principles may fill the gap. The common fund doctrine recognized in McCutchen can reduce the plan's recovery by the contingency percentage, but only where the SPD does not expressly address attorney fees.

[!KEY] For self-funded plans, the only effective way to protect medication costs from subrogation is to ensure the plan never pays for them in the first place. LienScripts pharmacy liens accomplish this by dispensing medications entirely outside the health plan system, removing medications from the subrogation equation before it begins.

Pharmacy Liens: Protection Regardless of Plan Type

Whether the client's ERISA plan is fully insured or self-funded, pharmacy liens provide a structural protection that state law arguments cannot match.

A pharmacy lien is a private contractual arrangement between the patient, attorney, and lien-based pharmacy. The pharmacy dispenses medications on credit with payment deferred until case resolution. No claim is submitted to the health plan. No plan benefits are paid. No subrogation interest attaches.

This structural independence means ERISA preemption analysis is irrelevant for the pharmacy lien portion of the settlement. The plan's subrogation clause, whether subject to state law or federal preemption, can only reach costs the plan paid. Costs paid through a pharmacy lien are outside the plan's reach entirely.

LienScripts generates a MERIT (Medication Evaluation & Rationale for Injury Treatment) report for every case, providing pharmacist-signed documentation for demand packages that simultaneously supports the damages claim and demonstrates the medications were never plan-paid expenses.

[!TIP] Enroll clients in a pharmacy lien at intake regardless of plan type. For fully insured plans, it eliminates a subrogation line item you would otherwise need to negotiate. For self-funded plans, it removes medications from a subrogation claim where state law provides no protection. Either way, the client's net recovery increases.

Hybrid Situations: Plans That Changed Funding Type

Some employers switch from fully insured to self-funded (or vice versa) mid-year. When an injury spans the transition period, medications dispensed before the switch may be subject to different subrogation rules than those dispensed after. This creates a split-funding analysis that requires mapping each claim to the applicable plan year and funding type.

As Amar Lunagaria, PharmD, LienScripts' Chief Pharmacist explains, "We see cases where the employer changed plan types during the treatment period. Having all medications on lien from day one eliminates this complexity entirely because neither version of the plan ever paid for the prescriptions."

Settlement Allocation Strategy by Plan Type

Fully insured plan present: Negotiate subrogation using state law protections. Apply the made-whole doctrine if the settlement is inadequate. Reduce the insurer's recovery by attorney fees under the common fund doctrine. The pharmacy lien is a separate line item that the insurer cannot reach.

Self-funded plan present: Request itemized EOBs to confirm what the plan actually paid. Challenge any line items for costs the plan did not pay, including lien-dispensed medications. Apply the McCutchen common fund reduction where the SPD is silent on fees. Consider Montanile equitable lien arguments for disbursement leverage.

Unknown or disputed plan type: Treat as self-funded until confirmed otherwise. This is the conservative approach that protects the client if the plan turns out to be self-funded. Request the SPD and Form 5500 immediately.

Related Resources

• ERISA Self-Funded Plans and Pharmacy Liens: What PI Attorneys Must Know
• ERISA Preemption Case Study: Pharmacy Lien Survives Subrogation Claim
• Health Insurance Subrogation vs. Pharmacy Liens