EOB denial code M51: what it means

What it means

The procedure code on the claim is missing, incomplete, or not valid.

Official X12 description

“Missing/incomplete/invalid procedure code(s).”

Typical cause

A coding error on the provider's claim.

What to do next

1. 1Ask your provider's billing office to correct the procedure code and resubmit.
2. 2This is a billing correction, not usually a patient-owed amount.