RARC M77 Active Supplemental

RARC M77: Missing or Invalid Place of Service

What This Means

The place of service (POS) code on the claim is missing, incomplete, or invalid. The payer needs a valid POS code to determine where the service was rendered, which affects coverage and reimbursement rates. Verify the correct POS code for the location where services were provided and resubmit the claim.

Disclaimer
This content is for informational purposes only. Always verify against your payer contracts and current coding guidelines.

Commonly Paired With

RARC M77 commonly appears alongside these CARC denial codes:

Code Name
CO-5 Procedure Code Inconsistent with Place of Service (also OA-5) →
CO-16 Missing Information or Billing Error →
CO-58 Invalid Place of Service / Treatment Setting Mismatch →
CO-199 Revenue Code / Procedure Code Mismatch →
CO-306 Type of Bill Inconsistent with Patient Status (also OA-306) →
CO-A8 Ungroupable DRG (also OA-A8) →

Sources

  1. X12.org