CO-209
What This Code Means
Per regulatory or other agreement. The provider cannot collect this amount from the patient. However, this amount may be billed to subsequent payer. Refund to patient if collected. (Use only with Group code OA)
Common Causes
- Payer-specific processing rule or historical/administrative code
- May require payer contact for full context
How to Resolve or Appeal
- Review the payer's specific policy referenced by this code
- Contact the payer's provider services line if the reason isn't clear from the remittance
More Denial Codes to Check
Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.