CO-234: Procedure Not Paid Separately (234)
This procedure is not paid separately. The service is considered included in another service or payment and does not qualify for separate reimbursement.
Why Claims Get Denied with CO-234
Denial code CO-234 is triggered when this procedure is not paid separately. the service is considered included in another service or payment and does not qualify for separate reimbursement. Understanding the root causes helps prevent future denials and strengthens your appeal when one occurs.
Procedure is bundled into a more comprehensive service per payer policy
Service included in a global payment or case rate
Ancillary service included in the facility fee
Add-on procedure billed without the required base procedure
How to Appeal CO-234
If the procedure was truly distinct and separately identifiable, resubmit with supporting documentation and appropriate modifiers. Review the payer's bundling policy and CCI edits for the code combination. If the service is carved out of the global payment per your contract, provide contract language.
Documentation Required for Appeal
A successful appeal of CO-234 requires thorough documentation. Gather these items before drafting your appeal letter:
Documentation showing the procedure was distinct and separate
CCI edit references for the code combination
Contract language showing carved-out services
Operative or clinical notes for each procedure
How to Prevent CO-234 Denials
Review bundling policies and CCI edits before billing multiple procedures. Understand which services are included in global payments and case rates. Verify add-on code requirements.
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