CO-97 — Benefit included in another service (bundling)
What it means
The payer considers this service bundled into another one it already paid — so it won't pay separately. Common when an add-on code is billed alongside a primary service.
Standard definition (paraphrased): The payer already paid for a related service and treats this one as folded into that payment, so it won't cut a separate check for it.
Why it happens
- • An add-on code was billed with its primary and the payer bundles them
- • Two services on the same day the payer treats as one payment
- • A modifier that would unbundle them (e.g. 59) was missing or not accepted
Common next steps therapists take
- • Check the payer's bundling edits for the code pair
- • If the services were genuinely separate, review whether an appropriate modifier applies, then resubmit
Related CPT codes
Educational information only
This page is general educational information, not legal, billing, or medical advice, and not a determination about any specific claim. Denial codes are maintained by the X12 committee and updated periodically. Always verify code meanings, benefits, and requirements directly with the payer and against your own records.
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