Denial code · Contractual Obligation (CO)
CO-11 denial code
The health reason given does not fit the service billed.
What the code means
Official meaning: The diagnosis is inconsistent with the procedure.
In plain words: The health reason given does not fit the service billed.
The usual fix
Check that the health reason listed fits the service, fix it if it is wrong or missing, and send the claim again corrected.
This is general information, not advice on a specific claim.
Learn on the job
Learn on the job with real denied claims.
Working denied claims is the medical claims desk's daily work. Read a code, find what is missing, fix the claim, or write the appeal.