MA27MA-series (Medicare alerts & claim-level)Missing Information
MA27: Entitlement number or name invalid
The member ID or name on the claim doesn't match the payer's enrollment records — often a typo, maiden name, or an old ID card.
Commonly appears with these denial codes
The denial code gives the category; MA27 pinpoints the specific problem. Read them together before touching the claim.
What to do about it
Re-verify eligibility, capture the ID exactly as printed on the current card, and resubmit. Front-desk card scanning prevents most of these.
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