MA65MA-series (Medicare alerts & claim-level)Missing Information
MA65: Admitting diagnosis missing or invalid
Inpatient claims require an admitting diagnosis; it's missing or invalid on this claim.
Commonly appears with these denial codes
The denial code gives the category; MA65 pinpoints the specific problem. Read them together before touching the claim.
What to do about it
Add the admitting diagnosis from the admission order/H&P and resubmit the institutional claim.
OakClaim fixes root causes, not just claims.
Free billing audit shows which remark codes keep recurring in your AR — and what they're costing you.