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M101 - Denial Journal
RARC

M101

What This Code Means

Begin to report a G1-G5 modifier with this HCPCS. This code was deactivated by X12 (as of 01/31/2004). See: M78.

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

RARC N60 RARC MA121 CARC CO-282 The procedure/revenue code is inconsistent with the type of bill RARC N76 RARC MA29 CARC CO-16 Claim lacks information needed for adjudication RARC N57 RARC MA95 RARC MA39 RARC M120 CARC CO-14 The date of birth follows the date of service CARC CO-231 Mutually exclusive procedures cannot be done in the same day/setting RARC M58

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

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