CO-29Contractual Adjustment
Claim filed after the deadline
What this code means
Your provider submitted the claim after the insurer filing deadline. Most insurers have strict windows, typically 90 to 365 days from the date of service.
What to do next
This is a provider-side error. Ask your provider to appeal with documentation showing why the filing was late. Some insurers grant exceptions for extenuating circumstances. Patients are generally not responsible for late filing penalties.
Appeal outlook: Low -- deadlines are strictly enforced
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