Timely filing
The one-year rule is in the Medicare claims processing manual. Exceptions are narrow and are listed in that manual, not on this page.
Source: CMS Medicare Claims Processing Manual, Chapter 1, timely filing. Page read October 14, 2026.
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Definition · Claims processing and coverage determinations
Timely filing
Medicare timely filing is the deadline for a fee-for-service claim. For dates of service on or after January 1, 2010, the claim must be received within one calendar year of the date of service. A Medicare Advantage plan can set its own, shorter deadline in its contract. This page does not file claims.
Questions
Timely filing, answered
Does the one-year limit apply to Medicare Advantage?
Not automatically. Fee-for-service uses the one-year rule. A Medicare Advantage plan follows the deadline in its provider contract.