When Medicare and Workers' Comp Both Try to Pay
When you have both Medicare and workers' compensation coverage, the two programs sometimes disagree about who should pay for your medical care. This happens because Medicare has rules about when it will pay, and workers' comp has its own rules about what it covers. The result is that a claim gets denied, or both programs try to pay and then one demands money back, or you get stuck in the middle waiting for them to sort it out.
The solution depends on whether your injury or illness is work-related. If it is, workers' comp is the primary payer—meaning it pays first, and Medicare only pays what workers' comp doesn't cover. If it isn't work-related, Medicare pays first. The key is getting the right program to process the claim in the right order, and that usually means telling each one about the other.
Key Takeaways
- Workers' compensation is the primary payer for work-related injuries and illnesses, even if you have Medicare; Medicare only pays the remainder.
- You must report your workers' comp case to Medicare by calling 1-800-MEDICARE and providing your case number and the date of injury.
- Your workers' comp insurer must also notify Medicare in writing within 30 days of accepting your claim, or face penalties.
- If Medicare has already paid for work-related care, workers' comp or Medicare may demand repayment once the conflict is resolved.
- Disputes between the two programs are resolved by your state's workers' comp board or appeals process, not by Medicare alone.
How to Tell Medicare About Your Workers' Comp Case
Call Medicare at 1-800-MEDICARE and tell them you have an open workers' compensation claim. Have your workers' comp case number, the date of your injury, and the name of your employer's insurance company ready. Medicare will flag your account so that future claims for work-related care are held until workers' comp makes a decision.
This step is critical because it stops Medicare from paying claims it shouldn't pay yet. If you don't report it, Medicare may pay, and then you or your provider will have to repay Medicare later—a process that can take months and create billing confusion.
You can also report it in writing by mailing a letter to your local Medicare Administrative Contractor (MAC). Your Medicare card or a call to 1-800-MEDICARE will tell you which MAC handles your state. Include your name, Medicare number, workers' comp case number, date of injury, and employer name.
What Your Workers' Comp Insurer Must Do
Your workers' comp insurance company is legally required to notify Medicare in writing within 30 days of accepting your claim. This notification must include your name, Medicare number, workers' comp case number, and the date of injury. If the insurer fails to do this, Medicare can impose penalties on them.
In practice, this doesn't always happen on time. If you've reported your case to Medicare but your workers' comp insurer hasn't, you can contact the insurer's claims adjuster and ask them to send the notification. Provide them with your Medicare number to make it easier.
Some states also require workers' comp insurers to notify the state workers' comp board or agency. Check your state's workers' compensation website to see if there's an additional reporting requirement.
When Medicare Has Already Paid for Work-Related Care
If Medicare paid for medical treatment related to your work injury before you reported the workers' comp case, one of two things will happen: Medicare will demand repayment, or workers' comp will demand repayment from Medicare.
Medicare's demand is called a conditional payment demand. Medicare sends you a letter listing what it paid and asking for the money back. You don't pay Medicare directly—instead, the money comes from your workers' comp settlement or award. Your workers' comp insurer or attorney will handle this repayment as part of closing your case.
If workers' comp has already paid the provider directly, workers' comp may demand that Medicare reimburse it. This is less common but can happen if workers' comp paid first and then Medicare also paid. In this case, your workers' comp claims adjuster will contact Medicare to recover the overpayment.
How to Handle a Claim Denial
If a provider submits a claim and it gets denied because Medicare and workers' comp are fighting over who pays, ask the provider's billing department which program denied it and why. The denial letter will say whether it was denied because workers' comp should have paid, or because Medicare needs more information.
If workers' comp denied it, contact your workers' comp claims adjuster and ask them to reconsider. Provide any medical records or documentation showing the care was work-related. If the adjuster still denies it, you can file an appeal with your state's workers' compensation board.
If Medicare denied it because it's waiting for workers' comp to decide, the denial letter will usually say so. In that case, once workers' comp makes a decision (accepts or denies the claim), ask the provider to resubmit to Medicare with a copy of the workers' comp decision letter.
Resolving Disputes Between the Two Programs
If Medicare and workers' comp genuinely disagree about whether an injury is work-related, or about the amount each should pay, the dispute is resolved through your state's workers' compensation system, not through Medicare.
File a dispute or appeal with your state's workers' compensation board or agency. Include documentation showing whether the injury occurred at work, what treatment was necessary, and what each program has paid or denied. Your state's workers' comp website will have forms and instructions for filing an appeal.
If you have a workers' compensation attorney, they can file the appeal on your behalf. Many workers' comp attorneys work on contingency, meaning they take a percentage of any award or settlement rather than charging an upfront fee.
Medicare does not participate in workers' comp appeals, but it will honor the final decision made by your state's workers' comp board. Once the board decides, Medicare will adjust its payment accordingly.
What Happens to Your Bills While This Is Being Resolved
Providers should not send you collection notices or demand payment while a legitimate dispute between Medicare and workers' comp is pending. If a provider bills you, ask them for proof that they've submitted the claim to both programs and received denials from both. If they haven't, ask them to do so before billing you.
If a provider continues to bill you despite an open workers' comp case, contact your state's workers' compensation board and report it. Many states have rules against balance billing when workers' comp is involved.
Keep copies of all denial letters, claim submissions, and correspondence between you, the provider, Medicare, and workers' comp. This documentation will be important if you need to file an appeal or dispute.
Frequently Asked Questions
Do I need to choose between Medicare and workers' comp?
No. If your injury is work-related, both programs apply, and workers' comp pays first. You don't choose one or the other. If your injury isn't work-related, Medicare is your primary coverage and workers' comp doesn't apply.
What if my workers' comp claim was denied but I think it should have been accepted?
File an appeal with your state's workers' compensation board within the deadline set by your state (usually 30 days from the denial letter). Include medical evidence, witness statements, or other proof that the injury occurred at work. Your state's workers' comp website has appeal forms and instructions.
Can I be billed for medical care while Medicare and workers' comp are figuring out who pays?
Providers should hold off on billing you while a legitimate dispute is pending. If you receive a bill, contact the provider's billing department and ask them to wait until the dispute is resolved. If they continue billing, report it to your state's workers' compensation board.
Who do I contact if Medicare and workers' comp both deny a claim?
If both programs deny the same claim, you have the right to appeal each denial separately. For workers' comp, file an appeal with your state's workers' compensation board. For Medicare, file an appeal through the Medicare appeals process (your denial letter will have instructions). You may want to consult a workers' comp attorney or patient advocate for help.
What if I receive a bill from Medicare asking me to repay what it paid for work-related care?
Don't ignore it, but don't pay it directly to Medicare either. Contact your workers' comp claims adjuster or attorney and tell them about the demand. The repayment will be handled as part of your workers' comp settlement or award, not as a separate bill to you.