CO-276: Services Denied by Prior Payer Not Covered
Neither payer will cover the service. Fix the prior payer's denial if it was wrong, then resubmit. Or appeal to the current payer for independent coverage. You cannot bill the patient.
What Does CO-276 Mean?
CO-276 means the provider bears the financial impact of this cascading denial. The current payer will not cover the service because the prior payer denied it, and the provider cannot bill the patient. Resolution requires either fixing the prior payer's denial or successfully arguing for independent coverage by the current payer.
CARC 276 fires when a secondary or subsequent payer denies a service because the prior payer already denied it. The current payer is essentially saying: the first payer said no, and we are not going to cover it either. This creates a cascading denial where neither payer reimburses the claim.
The key question is whether the current payer independently evaluated the claim or simply followed the prior payer's denial. In many cases, the secondary payer defers to the primary payer's coverage determination without conducting their own review. If the prior payer's denial was based on incorrect information, a coding error, or insufficient documentation, fixing the root cause at the prior payer level can unlock coverage at the current payer.
Resolution requires a two-pronged approach: first address the prior payer's denial, then resubmit to the current payer with the corrected adjudication. If the prior payer's denial is legitimate but the current payer should independently cover the service, appeal directly to the current payer with documentation supporting coverage under their plan.
Common Causes
| Cause | Frequency |
|---|---|
| Prior payer denied service as non-covered The primary payer denied the service entirely, and the secondary payer also does not cover the service under its plan, resulting in a contractual write-off | Most Common |
| Payer coordination failure Lack of synchronized coverage criteria between the prior and current payer causes the current payer to reject based on the prior denial without independent review | Common |
| Incorrect coding triggering prior denial Coding errors on the original claim caused the prior payer to deny, and the secondary payer follows suit based on that denial | Common |
| Missing documentation for medical necessity Insufficient documentation submitted to the prior payer resulted in a medical necessity denial that the current payer also upholds | Common |
| Policy exclusion applicable to both payers The service is excluded from coverage under both the prior and current payer's benefit plans | Occasional |
How to Resolve
Address the prior payer's denial first, then resubmit or appeal to the current payer with corrected information or independent coverage justification.
- Analyze the prior denial Review why the primary payer denied the service. If it was a coding error or documentation gap, that is your starting point.
- Appeal to the prior payer If the prior denial was incorrect, fix the issue and appeal to the primary payer. Once overturned, resubmit to the secondary.
- Compile documentation for current payer If the prior denial stands, prepare documentation showing the current payer should independently cover the service under their plan.
- Appeal to the current payer File a formal appeal with medical records, coverage documentation, and an explanation of why independent coverage should apply.
First appeal to the prior payer if their original denial was incorrect. Once corrected, resubmit to the current payer with the updated primary adjudication. If the prior denial stands, appeal to the current payer with documentation showing independent coverage should apply.
How to Prevent CO-276
- Ensure coding accuracy on primary claims to avoid upstream denials that cascade to secondary payers
- Submit complete documentation with medical necessity support to prevent primary payer denials
- Verify coverage with both payers before rendering services
- Stay informed about both payers' coverage policies for services commonly affected by cascading denials
General Prevention
- Verify patient eligibility and coverage with both primary and secondary payers before providing services
- Ensure coding accuracy on the original claim to prevent avoidable primary payer denials
- Maintain complete medical documentation that supports medical necessity across all payers
- Stay informed about coverage policies for both primary and secondary payers
- Communicate with both payers proactively when coordination of benefits issues arise
Also Filed As
The same CARC 276 may appear with different Group Codes:
Related Denial Codes
Sources
- https://www.mdclarity.com/denial-code/276
- https://x12.org/codes/claim-adjustment-reason-codes
- Codes maintained by X12. Visit x12.org for official definitions.