RARC M80: Service Not Covered When Performed in This Setting
The payer does not cover this service when performed in the setting indicated on the claim — verify coverage rules for the service location or update the place of service code if it was entered incorrectly.
What Does RARC M80 Mean?
M80 indicates that the billed service is not covered when performed in the care setting reported on the claim. Unlike M77, which flags a missing or technically invalid place of service code, M80 tells you the POS code itself is recognized but the payer does not cover the procedure in that particular setting. Many payers have site-of-service restrictions that limit where certain procedures can be performed for coverage purposes — for instance, a procedure might be covered when performed in an ambulatory surgical center but not in a physician's office, or vice versa.
These restrictions often reflect medical policy decisions about the appropriate care setting for a given service. Payers may determine that certain procedures require the resources and oversight of a facility setting, or conversely, that a service should be performed in a lower-cost outpatient setting rather than an inpatient facility. Medicare's outpatient-only list, for example, specifies procedures that are typically not covered on an inpatient basis. Commercial payers may have their own site-of-service policies that differ from Medicare's.
M80 commonly pairs with CARC 58 (service deemed to be provided in an inappropriate setting), CARC 170 (payment denied based on revenue or service code), or CARC 96 (non-covered charge). When you see M80, the first question to answer is whether the place of service code accurately reflects where the service was actually provided — if it does, you may be dealing with a genuine coverage limitation rather than a coding error.
What to Do
First, verify that the place of service code on the claim accurately reflects where the service was performed. If the POS code is wrong — for example, the service was performed in an ASC but billed with an office POS — correct it and resubmit. If the POS code is accurate, review the payer's coverage policy for the specific procedure and setting combination. Some payers publish site-of-service guidelines or medical policies that explain which settings are covered for which procedures.
If the service was clinically necessary in the billed setting and you believe the denial is incorrect, consider filing an appeal with documentation supporting why the setting was appropriate for the patient's clinical situation. For future claims, check payer-specific site-of-service restrictions before scheduling procedures in settings that may not be covered, and communicate with patients about potential out-of-pocket costs if the preferred setting is not covered by their plan.
Common Scenarios
- A surgical procedure on Medicare's inpatient-only list is billed on an outpatient claim, and the payer denies it with M80 because the procedure requires an inpatient admission for coverage.
- A commercial payer denies a diagnostic imaging study performed in a hospital outpatient department because their policy requires the study to be performed in a freestanding imaging center for coverage at the billed level.
- A physician bills for an infusion service performed in the office, but the payer's medical policy requires this particular drug infusion to be administered in a facility setting with appropriate monitoring capabilities.
Commonly Paired With
No common pairings documented yet.