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Medicare

Your Notice of Denial of Medicare Prescription Drug Coverage, Explained

CMS-10146Federal noticeChecked against an official source

Also called: Notice of Denial of Medicare Prescription Drug Coverage, Part D coverage determination denial

Last reviewed 2026-07-08

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What this notice usually means

This notice tells you your Part D plan denied a drug or a drug payment. Your plan sends it when it will not cover a request, in full or in part. The letter states the reason and how to appeal.

What to do now

  1. 1

    Read the reason and the date on your notice

    The letter explains what your Part D drug plan decided and why. Find that section first, since your own notice has the real facts of your case.

  2. 2

    Check how much time you have to respond

    Your notice states its own response or appeal deadline. That date controls, not a general timeline described here.

  3. 3

    Gather records that support your side

    Collect medical records, pay stubs, or other proof connected to the reason on your notice.

  4. 4

    Use the appeal steps on your letter, or call for help

    Your notice explains how to appeal. You can also call the number on your letter or ask a local legal aid group for free help.

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Deadline

Notice of Denial of Medicare Prescription Drug Coverage

From Federal Register / govinfo.gov (GPO)Retrieved 2026-07-07

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Sources

Last reviewed 2026-07-08

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