M25M-series (Medicare line-level)Documentation & Medical Necessity
M25: Documentation doesn't support level of service
The payer downcoded or denied because submitted information doesn't substantiate the E/M or service level billed.
Commonly appears with these denial codes
The denial code gives the category; M25 pinpoints the specific problem. Read them together before touching the claim.
What to do about it
Audit the note against current E/M guidelines (MDM or time). If the level is supported, appeal with the full record; if not, accept the recode and educate the provider.
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