Coordination of Benefits After Death: Sorting Out Multiple Insurance Plans

Why Coordination of Benefits Creates Problems After Death

When the deceased had two or more health plans — Medicare plus an employer plan, a retiree plan plus Medigap, or dual coverage through both spouses' employers — the coordination of benefits (COB) rules determine which plan pays first (primary) and which pays second (secondary).

Getting this sequence right is critical for the estate. If claims are processed out of order, the estate can end up paying balances that should have been covered by the secondary payer. And if Medicare made conditional payments because the primary payer was slow, Medicare will come back for its money.

How Primary and Secondary Payers Work

The primary payer processes the claim first and pays up to its coverage limits. The remaining balance goes to the secondary payer, which evaluates the claim under its own rules and pays its share. Whatever remains after both plans have processed is the patient's responsibility — and after death, that's the estate's responsibility.

The determination of which plan is primary follows Medicare Secondary Payer (MSP) rules:

• Current-employment group coverage can be primary over Medicare, but the order depends on the person's age, employment status, employer size, and other MSP rules. For people age 65 or older with coverage based on current employment, the group health plan generally pays first when the employer has 20 or more employees; Medicare generally pays first when the employer has fewer than 20.
• Medicare is primary for retirees with supplemental coverage — Medigap, retiree health benefits, or TRICARE for Life.
• For dual employer coverage, the birthday rule does not determine primary coverage for each spouse's own claims. It generally determines which parent's plan pays first for a dependent child covered by both parents' plans. Check each plan's coordination-of-benefits terms for other coverage combinations.

After death, the executor needs to notify both insurers of the death and confirm that all pending claims are being processed in the correct order. If the primary payer hasn't processed a claim, the secondary payer usually won't touch it.

Medicare Conditional Payments: The Recovery Trap

When a primary payer is slow to process a claim — common with liability insurance, workers' comp, or auto insurance in accident-related deaths — Medicare may step in and make a "conditional payment" to ensure the medical provider gets paid.

These conditional payments are not gifts. Medicare has a statutory right to recover them once the primary payer settles. The Benefits Coordination & Recovery Center (BCRC) manages this process. The letters depend on when the BCRC learns about the claim or settlement, so not every case receives all of them:

1. Rights and Responsibilities (RAR) letter — an initial notice that Medicare has identified a potential primary payer and is tracking conditional payments.
2. Conditional Payment Letter (CPL) — an interim listing of claims Medicare paid conditionally while the case is unresolved.
3. Conditional Payment Notice (CPN) — when a settlement or other payment has occurred, the BCRC may issue a CPN. The estate has 30 calendar days to respond with documentation or dispute unrelated claims; no response can lead to a demand letter.
4. Final Demand letter — payment is due within 60 days of the demand letter. If the amount is not repaid or otherwise resolved within that period, interest may be assessed from the demand-letter date.

For estates dealing with a personal injury settlement, auto insurance payout, or workers' compensation claim related to the death, Medicare conditional-payment recovery may apply if Medicare paid for related services. Check with the BCRC about the case and any recovery demand rather than assuming every settlement triggers a claim.

What the Executor Needs to Do

Notify all insurers of the death. Contact every plan the deceased was enrolled in — Medicare, employer plans, supplemental plans, TRICARE, VA coverage. Each needs a certified death certificate and your court-issued letters of appointment.

Request all EOBs. Get Explanation of Benefits statements for every date of service during the final illness from every insurer. You can't verify that coordination of benefits was processed correctly without seeing what each plan paid.

Check that claims were routed correctly. For each date of service, verify that the primary payer processed the claim first and that the secondary payer received and processed the remainder. If the secondary payer denied a claim because the primary payer hadn't processed it yet, resubmit once the primary EOB is available.

Respond to Medicare conditional payment notices. If the BCRC sends a RAR or CPL letter, review the listed claims carefully. You can dispute claims that are unrelated to the other payer's responsibility — for example, if Medicare paid for a routine checkup that has nothing to do with an auto accident settlement. File disputes within the 30-day window.

Verify insurance termination dates. Coverage under employer plans typically ends on the last day of the month of death, or on the date of death itself, depending on the plan. Any services billed after coverage ended need to be flagged and re-routed to whatever coverage (if any) was still active.

The Health Insurance & Medical Bills After Death toolkit includes the full EOB reconciliation workflow for matching bills across multiple payers, plus a deadline tracker for Medicare conditional payment response windows.