Denial Code Decoder
CO-97 — Bundled into another paid service
The payer considers this service part of another service already adjudicated — bundled under coding edits or included in a global period. The question is always whether the bundling is correct, or whether a distinct, separately payable service was performed.
Billable to the patient? No — bundled services are not patient liability.
Where this denial is born
- Front desk
- Coding
- Claim build
- Submission
- Adjudication
This denial is usually created at the highlighted stage — that is where prevention lives.
Answer the questions — follow the path
The same questions an experienced biller asks, in order. Your answers draw the route to the right action.
Was the service genuinely distinct from the one it was bundled into?
Different session, site, or a service beyond the usual pre/post work of the primary procedure.
The full decision tree
Was the service genuinely distinct from the one it was bundled into?
Different session, site, or a service beyond the usual pre/post work of the primary procedure.
- Yes →
Does documentation support a distinct-service modifier?
- Yes →
Resubmit with the appropriate modifier. Append the modifier that reports the distinct service, exactly as documented, and resubmit as a replacement claim. Expect the payer to request records — have them ready.
- No →
Accept the bundling. Correct bundling is not recoverable. Feed the pattern back to charge entry so the combination stops being billed separately.
- Yes →
- No →
Accept the bundling. Correct bundling is not recoverable. Feed the pattern back to charge entry so the combination stops being billed separately.
Prevention
Run claims against bundling edits before submission and track global periods on procedures, so separately-payable work gets its modifier at charge entry.
Related reading
Drowning in CO-97 denials?
Our denial team works them for you — root cause to recovery.
Ready to improve your revenue cycle?
Explore our services and knowledge base to see how we can help.