When can I file an appeal to a Medicare claim?

Dr. Michael Roizen, MD
Internal Medicine

If you are filing an appeal to an Original Medicare (Part A or B) claim, you must file within 120 days of receiving a Medicare Summary Notice (MSN).

If you are appealing a Medicare Part D claim, once you have received your request for coverage determination, you have 60 days to file an appeal.

If you have a Medicare Advantage or other supplemental Medicare plan, the timing of your appeal will depend on your specific plan.

For more information about when and how to file an appeal to a Medicare claim, check the back of your MSN or your Explanation of Benefits (EOB). Your EOB details what Medicare covers and how to access the services. You can also call Medicare at 1-800-633-4227 or visit

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.