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MA51 - Denial Journal
RARC

MA51

What This Code Means

The claim is missing, incomplete, or has an invalid CLIA certification number for laboratory services billed by physician office laboratory. This code was deactivated by X12 (as of 02/05/2005). See: MA120.

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-299 The billing provider is not eligible to receive payment for the service billed RARC M34 CARC CO-213 CARC CO-296 RARC M91 CARC CO-38 CARC CO-185 The rendering provider is not eligible to perform the service billed

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

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