CO-210
What This Code Means
Payment adjusted because pre-certification/authorization not received in a timely fashion
Common Causes
- Claim resubmitted before the original finished processing
- Claim held internally past the payer's filing deadline
How to Resolve or Appeal
- Check the original claim's status before resubmitting
- If a genuine duplicate, no further action is needed
- If filed late, gather proof of timely submission and file a timely-filing appeal
More Denial Codes to Check
Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.