CO-296: Precertification/Authorization Number Does Not Apply to Provider
CO-296 means your practice bears the cost of the authorization mismatch. Get the authorization corrected to match your provider NPI and resubmit. Do not bill the patient.
What Does CO-296 Mean?
When CARC 296 appears with CO, the payer holds the provider responsible for the authorization mismatch. The provider used an authorization that does not apply to them, and the cost of the denial falls on the provider. The provider must resolve the authorization issue before the claim can be reprocessed.
When CARC 296 appears on your remittance, the payer is telling you that the precertification, authorization, notification, or pre-treatment number you submitted with the claim is technically valid in their system, but it is not associated with your provider record. The authorization exists, but it was issued for a different provider than the one who billed the claim.
This situation commonly arises when a patient receives an authorization through one provider but then receives treatment from a different provider. For example, a PCP may obtain a precertification for a procedure, but the patient sees a specialist whose NPI is different from the one on the authorization. It also occurs when a provider changes practice locations, merges with another group, or when the authorization was obtained under a group NPI but billed under an individual NPI.
Unlike codes that indicate no authorization exists, CARC 296 confirms the authorization is valid. The issue is purely a mismatch between the authorized provider and the billing provider. This distinction is important because it means the service was already deemed medically appropriate by the payer, and the fix typically involves correcting the provider association rather than obtaining entirely new authorization.
Common Causes
| Cause | Frequency |
|---|---|
| Authorization issued for a different provider The precertification or authorization number on the claim was obtained for a different provider than the one who rendered and billed the services | Most Common |
| Provider not contracted for authorized service The provider is not contracted with the payer or not authorized to perform the specific procedure that was precertified | Common |
| Expired authorization number The precertification number used was valid at one point but has expired before services were rendered | Common |
| Incorrect authorization number submitted Typographical error, outdated information, or miscommunication caused the wrong authorization number to be entered on the claim | Common |
| Service does not match authorization criteria The provided authorization number covers a different service than what was billed on the claim | Occasional |
How to Resolve
Identify the provider mismatch, obtain a corrected authorization, and resubmit the claim.
- Check the authorization details Verify which provider NPI the authorization is tied to. If it should be your NPI, contact the payer to request a correction.
- Obtain or update authorization Get the authorization reissued under the correct billing provider NPI and resubmit the claim.
- Write off only as last resort If the authorization cannot be corrected and the appeal is exhausted, write off the balance. Do not transfer the CO-296 amount to the patient.
How to Prevent CO-296
- Always verify that the authorization is issued under the correct billing provider NPI before rendering services
- Confirm authorization details including covered provider, service dates, and procedure codes at time of scheduling
- Implement an authorization verification checklist that includes provider NPI matching
General Prevention
- Verify provider network participation status before scheduling services that require precertification
- Obtain preauthorization using the correct billing provider NPI to ensure the authorization matches
- Confirm authorization details including covered provider, services, and valid dates before rendering services
- Train staff on payer-specific precertification requirements and verification protocols
- Monitor payer policy changes that may affect authorization requirements
Also Filed As
The same CARC 296 may appear with different Group Codes:
Related Denial Codes
Sources
- https://www.mdclarity.com/denial-code/296
- https://x12.org/codes/claim-adjustment-reason-codes
- Codes maintained by X12. Visit x12.org for official definitions.