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Your Medicare Advantage Denial Notice, Explained
Also called: Integrated Denial Notice, IDN, CMS-10003-NDP (predecessor), CMS-10003-NDMC (predecessor)
Last reviewed 2026-07-07
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What this notice usually means
This notice usually comes from your Medicare Advantage plan, not Medicare itself. It means the plan denied a service, item, or payment you or your doctor asked for. The letter explains the reason and points to your appeal rights. The letter itself controls the exact reason and the next deadline.
What to do now
- 1
Find the deadline on your letter
Your denial notice lists how many days you have to appeal. This page cannot see your letter, so check that date yourself.
- 2
Read the stated reason
The notice explains why the plan denied the service or payment. Compare that reason to what your doctor asked for.
- 3
Gather supporting papers
Collect doctor notes, test results, or bills tied to the denied service. These help explain your case in an appeal.
- 4
Call the number on the notice
Your plan's phone number is printed on the letter. You can also call 1-800-MEDICARE for free help with the appeal process.
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“Notice of Denial of Medical Coverage (or Payment) (NDMCP) (CMS-10003)”
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Sources
- OMB / reginfo.gov (Office of Information and Regulatory Affairs)Retrieved 2026-07-07
- CMS via reginfo.govRetrieved 2026-07-07
Last reviewed 2026-07-07
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