How to Fight an Insurance Subrogation Claim

You were injured, your health insurer paid your medical bills, and then you settled a lawsuit against the at-fault party. Now your insurer is demanding reimbursement — sometimes for the full amount they paid. This is insurance subrogation, and it can devastate an injury settlement. But you have more leverage than most people realize. Federal law, state law, and equitable doctrines give you significant tools to fight back or substantially reduce the amount you owe.

What Is Insurance Subrogation?

Subrogation is the legal doctrine that allows an insurance company that paid your medical expenses to step into your shoes and recover that money from the party responsible for your injury. The theory: you should not receive a double recovery — once from the insurer and again from the at-fault party's settlement.

When you settle a personal injury claim, your health insurer will typically send you (or your attorney) a subrogation lien — a demand for repayment from your settlement proceeds.

The amount of the lien, and whether you must pay it at all, depends on what type of health plan you have and what state you are in.

The Made-Whole Doctrine

The most powerful equitable defense against subrogation is the made-whole doctrine: the principle that an insurer cannot recover through subrogation unless the insured has been fully compensated ("made whole") for their injury.

If your total damages — medical expenses, lost wages, pain and suffering, future costs — exceed the total amount recovered in your settlement, the argument is that you were not made whole. Under the made-whole doctrine, the insurer's subrogation claim must yield until you are fully compensated.

Example:

• Total damages: $500,000
• Settlement recovery: $150,000 (defendant's policy limits)
• Health insurance lien: $80,000
• Made-whole argument: You are not whole (you recovered only $150,000 of $500,000 in losses), so the insurer cannot collect the lien from a settlement that does not fully compensate you

The made-whole doctrine is recognized in most states as a default rule, though the strength of protection varies significantly:

• Strong made-whole states: California, Texas, Washington — courts robustly apply the doctrine
• States that permit contractual override: Some states allow plan documents to waive the made-whole requirement
• States with statutory anti-subrogation rules: A few states limit or prohibit subrogation outright for health insurance

erisa-self-funded-plans-the-federal-problem">ERISA Self-Funded Plans: The Federal Problem

If your health insurance is through a self-funded ERISA employer plan, the made-whole doctrine may not protect you. In Montanile v. Board of Trustees, 577 U.S. 136 (2016), the Supreme Court held that ERISA plans can enforce subrogation rights against identifiable settlement funds even when the insured was not made whole — if the plan documents explicitly establish this right.

Key implications for ERISA plan subrogation:

• The plan's specific subrogation language controls
• State laws that would limit subrogation do not apply (ERISA preempts state law)
• If you spend the settlement money before the insurer asserts its lien against a specific fund, the Supreme Court indicated the insurer may lose its equitable lien (the Montanile rule — but this is narrow and fact-specific)

Your best tool against ERISA subrogation: Negotiate. ERISA plans regularly accept reductions — particularly when you can document that the settlement did not make you whole, when there is comparative negligence, or when recovery was limited by the defendant's insurance limits. Many ERISA plan administrators have discretion to compromise liens and routinely do so.

Negotiation Tactics

Whether you are dealing with a state-regulated plan or an ERISA plan, negotiation is almost always possible. Tactics that work:

1. Argue the made-whole doctrine. Prepare a damages analysis showing total losses versus recovery. Present this in writing to the subrogation unit.

2. Cite attorney's fees and costs. Most states and many federal courts recognize the "common fund doctrine" — the insurer should bear a proportionate share of the attorney's fees and litigation costs that generated the recovery. This can reduce the lien by one-third or more.

3. Argue comparative fault reduction. If the settlement reflects a discount for comparative negligence (your partial responsibility for the accident), argue the subrogation lien should be reduced proportionally.

4. Request the plan documents. For ERISA plans, request the SPD and the plan's subrogation provision in full. Many subrogation claims are asserted by third-party subrogation vendors who misstate the plan's actual terms.

5. Point out limits on recovery. If the defendant's policy limits are exhausted and you could not recover more, that itself supports a made-whole argument.

6. Negotiate a compromise. Many subrogation vendors (who work on commission) are authorized to accept 50-80 cents on the dollar rather than litigate. Make an offer.

State Protections Against Subrogation

Some states have enacted specific anti-subrogation or lien-limitation laws:

• Arkansas: State statute prohibits subrogation by health insurers (fully insured plans only — ERISA preempts for self-funded plans)
• New York: General Obligations Law § 5-335 prohibits personal injury settlement amounts from being subject to subrogation
• Indiana: Limits on subrogation liens in personal injury cases

Check your state insurance code or consult a personal injury attorney in your state.

Getting Legal Help

Subrogation disputes in injury cases are complex, and the stakes can be high. If your insurer's lien is substantial relative to your settlement, consult a personal injury attorney (if you do not already have one) or a healthcare attorney with subrogation experience. Most personal injury attorneys handle subrogation negotiation as part of their settlement representation. For ERISA plan subrogation specifically, an attorney familiar with ERISA's limited remedies is advisable.

You settled your injury case to be compensated — not to hand the money back to your insurer. Fight the lien.

Fight Back With ClaimBack

ClaimBack's free AI tool drafts a professional appeal letter in minutes, tailored to your insurer and denial reason. Don't let a denial be the final word. Fight your denial at ClaimBack →

Related Reading:

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs External Insurance Appeal