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M33 - Denial Journal
RARC

M33

What This Code Means

The claim is missing, incomplete, or has an invalid UPIN for the ordering/referring/performing provider. This code was deactivated by X12 (as of 08/01/2004). See: M68.

How to Resolve or Appeal

  1. This is a historical/deactivated code — no longer used on current claims. If seen on an old remittance, refer to the replacement code noted above where available.

More Denial Codes to Check

CARC CO-240 CARC CO-5 Procedure code/type of bill inconsistent with place of service RARC MA130 Claim contains incomplete/invalid information — unprocessable, no appeal rights RARC MA92 CARC CO-B17 RARC MA63 RARC M47 CARC CO-B22 CARC CO-97 Payment included in the allowance for another service already adjudicated RARC N77 RARC MA110 RARC M99

Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.

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