CARC CO-96Non-covered charge(s). At least one Remark Code must be provided (may ...2026 Appeals, Prevention & Recovery Guide
Root Causes
Why CO-96 fires. Understanding the cause is the first step. Fix the cause, not just the symptom.
Non-covered charges. The payer is not covering the service, and at least one remark code (RARC) must accompany CO-96 to explain why. Always read the paired RARC; that is where the real reason lives.
- The service is not a covered benefit under the plan
- The service is statutorily excluded (common with Medicare for certain screenings and cosmetic procedures)
- The payer considers the service experimental or investigational under its medical policy
- A required document, such as an advance beneficiary notice, was not on file
- The benefit category does not include this service
Quick Reference
Appeal Strategy
What to attach, what to skip, and where to file. Built from CERT and RAC reports plus major payer manuals.
The remark code drives the strategy:
- If the service is actually covered and was denied in error, appeal with the payer's own medical policy and the clinical records
- If the denial is experimental or investigational, challenge it with peer-reviewed literature and the specific medical policy language
- If the service is genuinely non-covered and a valid advance beneficiary notice was signed, the balance shifts to the patient and becomes patient responsibility rather than a write-off
A statutory exclusion cannot be appealed into coverage. Confirm whether it is truly excluded or merely denied in error before spending time on it.
60 percent of denied claims are never resubmitted. That is permanent revenue loss. Our denial management services work every CO-96 line under aging buckets, file appeals within 48 hours, and recover what most billers write off.
Prevention Workflow
The cheapest denial is the one that never fires. Build these checks into the front-end workflow.
Verify covered benefits before the service, not after. When non-coverage is possible, obtain an advance beneficiary notice or the commercial equivalent so the balance can be billed to the patient. Check the payer's medical policy for experimental designations on newer procedures. Make sure every CO-96 you receive is read together with its remark code so you address the actual cause.
Practices that build CO-96 prevention into eligibility, scrubber rules, and charge-capture see 40 to 70 percent reduction in this denial type within 90 days. Catch upstream beats appeal downstream every time.
The cost of denials, in real numbers
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Everything about CO-96
What does denial code CO-96 mean?
Non-covered charge(s). At least one Remark Code must be provided (may be comprised of either the NCPDP Reject Reason Code, or Remittance Advice Remark Code that is not an ALERT.) Usage: Refer to the 835 Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if present
Can CO-96 be appealed successfully?
Overturn rate: Variable and driven by the paired remark code; coverage-policy denials can overturn with documentation, while statutory exclusions cannot. Successful appeals require documentation that directly addresses the payer's stated reason for denial. See the Appeal Strategy section for the exact attachments and modifier paths that win.
How do I prevent CO-96 denials?
Verify covered benefits before the service, not after. When non-coverage is possible, obtain an advance beneficiary notice or the commercial equivalent so the balance can be billed to the patient. Check the payer's medical policy for experimental designations on newer procedures. Make sure every CO-96 you receive is read together with its remark code so you address the actual cause.
CARC codes maintained by X12 N. Overturn rates reflect aggregated CERT, RAC, and payer-published data. Actual results vary by payer, contract, and clinical specifics. Curated content reviewed by AAPC-certified coders.
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