Subrogation

Subrogation is an insurer's right to step into your shoes after paying a claim and recover that money from whoever caused the loss. The word comes from the Latin for "substitute," and that is exactly what happens: once your insurer pays you, it substitutes itself as the party entitled to collect from the wrongdoer. The principle exists to prevent double recovery — you should not be paid twice for the same loss — and to make sure the at-fault party, not your insurer, ultimately bears the cost.

A plain example

You are rear-ended at a stoplight. Rather than wait months for the other driver's insurer, you use your own collision coverage: your carrier pays the $8,000 repair bill and you pay your $500 deductible. Behind the scenes, your insurer then pursues the at-fault driver's carrier for the $8,000 it paid — that pursuit is subrogation. If it recovers in full, it is generally required to refund your $500 deductible too, since you should be made whole first. You did nothing except cooperate; the insurers sorted out fault between themselves.

When subrogation reaches your injury settlement

The same principle has more bite when your health insurer pays your accident-related medical bills and you later settle with the at-fault party. The health plan will assert a reimbursement or subrogation claim against your settlement — frequently in the form of a lien, which is the device used to enforce that right against your recovery (the lien entry in this glossary covers how those claims are negotiated and paid). Two equitable doctrines often limit what the insurer can take:

• The made-whole doctrine: in many states, an insurer cannot recover until the injured person has been fully compensated for the loss.
• The common-fund doctrine: an insurer that benefits from your attorney's work generally must share the attorney's fees, which reduces its claim proportionally.

Whether these doctrines apply depends on the state and on the policy language — some plans, particularly self-funded employer plans governed by federal law, can contract around them. That is a question worth asking your lawyer rather than assuming.

Your duty to cooperate — and waivers

Most policies require you to cooperate with subrogation and to do nothing that impairs it. Signing a release with the at-fault party that wipes out your insurer's rights, without telling your insurer, can leave you personally on the hook. Conversely, parties sometimes agree in advance to a waiver of subrogation — common in construction contracts and commercial leases — in which an insurer gives up these rights entirely.

Subrogation runs quietly through nearly every injury claim involving insurance. Knowing it exists, and raising it early, keeps it from taking an unexpected bite out of your settlement at the very end of the case.

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