Hurt in an Accident? Why Medicare Won't Pay the Bill First

After an accident, the letters about who pays first often arrive before the healing is done.

After an accident, no-fault and liability insurance pay first for your care, and workers' compensation pays first for a job injury. Under Medicare's rules, hospitals should gather that insurance information before your care begins.

If that surprises you, you are not alone. It's common to picture Medicare covering the ambulance, the hospital and the rehab the same way it covers a checkup. Contrary to that picture, Medicare's own secondary payer overview sets out the order plainly. The bill does not disappear. If Medicare mails you a letter asking about other insurance, the overview asks you to answer it "in a timely manner" so your claims are paid correctly.

Two details from that overview are easy to miss. An employer health plan also pays ahead of Medicare when you or your spouse still work for a company with 20 or more employees. And if a workers' compensation insurer denies a claim as not covered, that claim can then be filed with Medicare.

My honest view is that learning this order early protects you more than any single form you fill out later. It changes how you read every bill. It also changes what you sign. So why does Medicare step back at all?

Why won't Medicare pay my accident bills first?

Medicare pays second when car insurance, no-fault, liability coverage or workers' compensation is responsible for your injury, and it expects repayment from any settlement you receive.

Before you sort a single bill, it can help to answer three plain questions:

1. Did the injury happen in a car, on someone else's property, or at work?
2. Is an auto policy, a property owner's liability policy or a workers' compensation claim involved?
3. Have you, or a lawyer working for you, started a claim or legal action over it?

A yes to any of these usually means Medicare is not first in line.

It's common to feel blindsided here. The common assumption is that Medicare simply pays your medical bills after an injury, the way it would for a flu shot. The Centers for Medicare & Medicaid Services (CMS) says otherwise: when you're in an accident involving no-fault or liability insurance, that insurance pays first for accident-related care, and Medicare pays second. Workers' compensation pays first for a job injury, too.

The rule is older than many people realize. Medicare paid first for nearly everything when it began in 1966. In 1980, Congress made it the secondary payer to certain plans to shift costs toward private sources of payment. Today the law sits at 42 U.S.C. 1395y(b), and federal law takes precedence over state laws and private contracts. An insurer can't write its way to the back of the line.

Your doctors don't get a choice either. Every provider that bills Medicare has to check whether Medicare is really the primary payer. In its 2025 provider Q&A, Noridian, a Medicare contractor, said providers bill the primary insurer first even when the patient asks them not to bill their auto insurance. If that insurer hasn't paid within 120 days, the provider may ask Medicare for a conditional payment, which is money Medicare advances on the other insurer's behalf.

Translation: Medicare can cover you for now, but it keeps a receipt.

In practice, your accident bill has two lives. It goes to the responsible insurer first. Medicare steps in later, and only on condition.

No wonder people feel unsure. In one online Medicare discussion about a crash with an uninsured driver, people offered clashing answers, from Medicare pays first to Medicare pays nothing at all. Most of them still agreed that the auto side ends up carrying the cost. Combining 4 sources points to that same pattern, with Medicare acting as a backup that wants its money returned.

The payment order question comes up whether you have Original Medicare or a Medicare Advantage plan. At Understood Care, our plan data shows about 94% of Texas Medicare Advantage members, on 2024 enrollment, are with an insurer we accept. If you're weighing who could help you through a claim like this, our guide to patient advocate services for Medicare Advantage plans lays out what to look for.

The harder question is what happens to that advance once your claim settles.

Will Medicare take money out of my accident settlement, and how much?

Yes. Any conditional payment Medicare made for your accident care is repaid from the settlement, judgment or award, usually after some credit for legal costs you paid.

A conditional payment is money Medicare pays toward care that another insurer may owe. It carries that name because it has to be paid back once a settlement, judgment, award or other payment comes through. What I want you to hear is that this is a debt, not a penalty. Medicare covered you so you wouldn't have to use your own money while the other insurer took its time.

The debt has a clear start and end. Medicare's recovery case runs from the date of the incident through the date of settlement. Every accident-related claim it pays in between can end up on the bill.

What the letters look like

Once a case is reported, the Benefits Coordination & Recovery Center (BCRC), the contractor that handles recovery for Medicare, posts it to your record and mails a Rights and Responsibilities letter. Within 65 days of that letter, the BCRC sends a Conditional Payment Letter and a Payment Summary Form, which lists each claim it has tied to your case. That first figure is only an interim amount, because Medicare may keep paying claims while your case is open. No two letters look alike in dollars, since each one lists only the claims linked to that person's injury.

Settled before Medicare heard about it? Then the BCRC sends a Conditional Payment Notification instead, and you have 30 calendar days to answer. If no answer arrives, a demand letter goes out automatically with no reduction for attorney fees or costs.

How the amount gets decided

How much comes out depends on the settlement and on what it cost you to win it. Medicare only counts the legal fees and costs that you, the injured person, actually paid. Lien-resolution firms that work with injury lawyers describe the harder edge of that math: when Medicare's payments equal or exceed a small settlement, its claim can take most of what remains after fees.

Those firms point to a federal case, U.S. v. Harris, to show Medicare follows through. A lawyer settled a Medicare patient's claim for $25,000. Medicare had made conditional payments of $22,549.67 and demanded $10,253.59. The lawyer paid out the money without repaying Medicare, and the court entered judgment against the lawyer personally for $11,367.78 plus interest.

That case surprises many people. The debt follows the money, not only the patient.

Your hospital may wait on the settlement, too. Where state law allows, a provider can skip Medicare and hold its bill as a lien against your settlement, though Noridian's 2025 guidance says it may not add interest, lien filing fees or administrative fees.

Insurers have their own reason to speak up. Under a federal rule finalized in 2023, with provisions applying on or after October 11, 2024, insurers that report a settlement more than a year late can face penalties that, as of 2023, ran from $250 to $1,000 a day depending on how late the report is. In plain terms, Medicare is likely to learn about your settlement whether or not you tell it yourself.

If you're also arranging care at home in New York, our complete guide to Medicare and CDPAP in New York explains how those benefits fit together. That's why the order of what you do in the first weeks after an accident matters so much.

What should you do after an accident to protect your Medicare coverage and your settlement?

Report the accident early, track every claim Medicare pays, and protect settlement money until Medicare's demand letter arrives. Your normal 2026 deductibles keep applying the whole time.

It's normal to feel like this is too much to manage while you or someone you love is healing. You don't have to do it all in one day. Here is the order I'd follow:

1. Report the accident. Call the Benefits Coordination & Recovery Center at 1-855-798-2627 and tell them about any pending liability, no-fault or workers' compensation case. The BCRC treats this report as the first step in the recovery process.
2. Give permission to your helpers. A Proof of Representation lets a lawyer or another person act for you. A Consent to Release lets someone, such as an adult child, receive BCRC information for a limited time.
3. Check the claims list line by line. Look for care that had nothing to do with the accident. You can dispute unrelated claims by mail, fax or the Medicare Secondary Payer Recovery Portal (MSPRP), and the BCRC asks for 45 calendar days to review them. Send records with your dispute, because thin documentation gets denied.
4. Ask for an updated figure if things drag on. If your settlement is significantly delayed, you or your representative may request an interim conditional payment letter.
5. Report the settlement completely. Tell the BCRC the date of settlement, the amount, and the attorney fees and costs you paid yourself.
6. Hold the money. I'd keep enough set aside to cover Medicare's claim until the demand letter arrives.

Silence is the expensive choice. A short phone call now can spare you a long dispute later.

One honest caveat. A company that sells data-checking tools to Medicare Advantage plans says the federal records behind these rules don't always update when someone's coverage ends. Reporting rules make sure Medicare hears about your case. They don't promise your record is right, so it's worth asking the BCRC what it has on file.

Medicare Advantage members are part of this picture, too. In Texas, about 54% of Medicare beneficiaries were in Medicare Advantage in 2024, so many injured seniors there will also want to tell their plan about the accident. At Understood Care, we accept Original Medicare and plans from UnitedHealthcare, Humana, Wellcare and other insurers in Texas, and we confirm your coverage before your first session.

Your own costs keep running alongside the claim. The Centers for Medicare & Medicaid Services sets the 2026 Part A hospital deductible at $1,736 per benefit period and the Part B deductible at $283 for the year. Those amounts don't wait for a settlement. They're yours to plan around while the insurers sort out who owes what.

If the injury lands on top of a long-term condition, our guide to heart care for seniors on Medicare shows how an advocate can keep the rest of your care moving. The accident bill is only one part of the year ahead.

What should you plan for once the settlement is done?

Plan for the care that continues after the case closes. Rehab stays and help at home can keep costing you long after Medicare's repayment claim is settled.

As one commenter told a family caring for two injured grandparents in a 2023 Reddit thread, "Medicare will only pay for temporary home health," yet settlement talks often center on bills already paid. Conventional wisdom treats that as the whole story. I see it differently.

In 2026, Part A coinsurance for a skilled nursing stay is $217 a day for days 21 to 100, up from $209.50 in 2025, according to the Centers for Medicare & Medicaid Services. Those days add up quietly, and they keep arriving after the case file is closed.

Our plan data shows about 57% of Wisconsin Medicare beneficiaries were in Medicare Advantage in 2024. Many families there will sort out rehab with a private plan as well as with Medicare. Before you sign, ask your lawyer one more question: what will pay for the care that comes after?