The medical necessity form must be personally signed by the attending physician.
Code type
RARC (Remark)
Category
Documentation
Common CARC pairings
RARCs like M42 ride alongside CARCs on the 835 electronic remittance advice. These are the CARC denials RARC M42 is most often paired with.
| CARC | Meaning |
|---|---|
| 251 | The attachment/other documentation that was received was incomplete or deficient. The necessary information is still needed to process the claim. At least one Remark Code must be provided (may be comprised of either the NCPDP Reject Reason Code, or remittance Advice Remark Code that is not an ALERT). |
| 252 | An attachment/other documentation is required to adjudicate this claim/service. At least one Remark Code must be provided (may be comprised of either the NCPDP Reject Reason Code, or Remittance Advice Remark Code that is not an ALERT). |
See the full resolution workflow for RARC M42
Members of the EDI-Code Intelligence Lab get the step-by-step rework path, appeal language, root-cause drivers, and prevention checklist for every RARC and CARC pairing, plus payer-specific quirks.
Open in EDI Lab