5: The procedure code/type of bill is inconsistent with the place of service.
The place of service billed does not match where this type of procedure is normally or permissibly performed, according to the payer's edits.
What the group code means
- CO
- Contractual Obligation. The provider is responsible and the amount cannot be billed to the patient.
Why it fires
- The procedure is restricted to certain settings, such as an inpatient-only procedure billed as outpatient, or a code that requires a facility place of service billed as office
- The wrong place of service code was entered relative to where the service actually occurred
- The type of bill on an institutional claim does not match the service billed
Corrective actions, ranked
- 1
Verify the correct place of service
Confirm where the service was actually rendered and check the code's allowed settings.
- 2
Correct the place of service or type of bill
Fix the entry error and resubmit as a corrected claim if the actual setting supports coverage.
- 3
Check inpatient-only lists
For Medicare, confirm whether the procedure is on the inpatient-only list, which would require a different billing approach entirely.
Is it worth appealing
Not an appeal. Correct the place of service or type of bill to match where care was actually delivered and resubmit.
Retrieved 2026-07-18.
Do not let this happen again
Scrub the claim against NCCI PTP and MUE edits before you submit, free and in your browser.
DenialPath provides billing and administrative guidance based on published CMS and X12 sources. It is not medical advice, not a coverage determination, and not a guarantee of payment. NCCI and MUE edits are republished quarterly and payer policies vary by contract. Always confirm against the payer's own current policy before submitting or appealing.