How to Appeal CO-96 Denial: Non-covered charge(s)
The billed service is not covered based on the terms of the patient's benefit plan. This guide explains what it means, why it happens, and exactly how to build a winning appeal.
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What Does CO-96 Mean?
The billed service is not covered based on the terms of the patient's benefit plan.
Commonly seen in:
Step-by-Step Appeal Guide for CO-96
- 1
Request the specific clinical criteria or LCD/NCD the payer used to deny the claim
- 2
Obtain all relevant clinical documentation: progress notes, lab results, imaging, referrals
- 3
Have the treating provider write a letter of medical necessity addressing the denial criteria
- 4
Cite applicable LCDs, NCDs, and peer-reviewed literature supporting the treatment
- 5
Submit the appeal with all documentation and request a peer-to-peer review if available
Counter-Arguments to Use in Your Appeal
These are the strongest arguments medical billing professionals use to overturn CO-96 denials.
Request the specific benefit plan language that excludes the service
Provide peer-reviewed literature supporting the medical necessity
Cite applicable LCDs/NCDs that cover the service under the billed diagnosis
Request external review if internal appeal is denied
Regulations and Guidelines to Cite
Citing specific regulations strengthens your appeal and demonstrates you know your rights.
Expert Tip for CO-96 Appeals
Similar to CO-50. The key is determining whether it's a true plan exclusion or a medical necessity question — different appeal strategies for each.
Frequently Asked Questions
What is a CO-96 denial code?
The billed service is not covered based on the terms of the patient's benefit plan.
Can I appeal a CO-96 denial?
Yes. All insurance denials are appealable. Follow the step-by-step guide above and submit your appeal before the payer's deadline, typically 180 days from the denial date.
What documentation do I need to appeal CO-96?
For a CO-96 denial, you typically need: the original denial letter/EOB, clinical documentation supporting the service, any prior authorization records, and a cover letter citing the relevant regulations listed above. The specific documents depend on why the denial was issued.
How long does a CO-96 appeal take?
Most payers are required to process standard appeals within 30–60 days. Expedited appeals (for urgent care) must be decided within 72 hours. Under ERISA, group health plans must provide an appeal decision within 60 days for pre-service and 60 days for post-service claims.
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