All denial codes

CARC · CO group

CO-11

The diagnosis is inconsistent with the procedure

Contractual obligation; provider write-off unless appealed

What it means
The payer does not accept the diagnosis code as medically supporting the service billed.
Likely cause
Z-code or unspecified diagnosis used as primary, or the diagnosis on the claim does not match the one documented in the note.
How to fix it
Pull the note, bill the most specific supported diagnosis as primary, and resubmit corrected. Fix the intake template if the pattern repeats.
Revenue impact
Usually recoverable; repeated hits signal a documentation template problem.
  • diagnosis
  • medical necessity
  • coding

Related codes

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