EOB denial code · CO group
CO-96: Non-Covered Charge — Meaning & Next Steps
CO-96 means the plan processed the claim but marked a specific charge as not covered — commonly a service excluded from your benefits, a supply billed separately, or care not routed through the right benefit. Unlike CO-50 (medical necessity) or CO-45 (rate gap), CO-96 targets one charge. Whether you owe it depends on WHY it isn't covered: an excluded benefit generally stands, but a coding or routing error is fixable by rebilling.
What “CO-96” means on your EOB
Non-covered charge(s).
Who pays? CO — Contractual Obligation
CO (contractual) — the plan denies coverage for that charge. If the charge is genuinely excluded, you may owe the provider directly; if it's a coding or routing error, it should be rebilled.
What to do next: First find out WHY the charge isn't covered: (1) service not a benefit → check the policy exclusions; (2) billed under the wrong category → ask the provider to rebill under a covered code; (3) non-covered add-on to a covered service → ask to have it bundled into the primary code. Quote the policy language in the appeal and, if needed, request independent external review after the internal appeal.
Why this denial happens
- A service excluded from your policy (e.g., certain cosmetic, dental, or preventive extras).
- A supply or add-on billed as a separate line instead of being bundled into the main service.
- Care delivered in a non-covered setting (e.g., an out-of-network facility for an in-network service).
- The service was billed under a code that doesn't match what was actually performed.
What to do now
- Identify exactly which line carries CO-96 on your EOB.
- Ask your provider why that charge is separate and whether it can be rebilled under a covered primary service.
- If the exclusion is real, check the policy for exceptions (e.g., medically necessary variants of an excluded service).
- If the service should be covered, appeal with the policy language and your doctor's documentation, then external review if needed.
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Generate an appeal letter →What counts as a non-covered charge?
Anything your plan excludes: certain preventive extras, cosmetic procedures, some supplies, or services outside your benefit structure. CO-96 marks the specific line so you can see it wasn't a math error — it's a benefit question.
Can a non-covered charge be overturned?
Yes, when it should never have been non-covered — wrong code, wrong benefit category, or a bundled item billed separately. Whether it's appealable depends on the reason behind the code, not the code itself.
Do I owe the provider for a CO-96 amount?
If the charge is a legitimately excluded benefit, the provider may bill you directly (contract terms vary). If it was a coding or routing error, it should be rebilled — don't pay before confirming the reason.