Denial Code CO-11: Description, Meaning and How to Fix It
The diagnosis code does not match or support the procedure billed.
Official description
The diagnosis is inconsistent with the procedure.
Common cause
Coding error, non-specific diagnosis, or a diagnosis that does not establish medical necessity for the CPT.
How to fix it
Review documentation, correct the diagnosis or procedure coding, and resubmit or appeal.
Related denial codes
- CO-4: A modifier is missing or wrong for the procedure billed.
- CO-146: The diagnosis code was not valid for that date of service.
- CO-6: The procedure billed does not fit the patient's age per payer edits.
- M76: The diagnosis is missing, incomplete, or invalid on the claim.
- CO-45: The amount billed is higher than the payer's contracted (allowed) rate. The difference is a contractual write-off, not a patient balance.
- CO-16: The claim is missing required information or has an error. It is almost always paired with a RARC that names the specific missing field.