Insurance Timely Filing Limits (Updated for 2026)
Quickly look up, search, and verify claims submission deadlines for the top 50 commercial, government, and regional healthcare payers.
What is a Timely Filing Limit?
A timely filing limit is the contractual timeframe within which a healthcare provider must submit a medical claim to an insurance payer after the date of service. Failure to file the claim within this window typically results in a denial (often coded as CO-29), and the provider is contractually prohibited from billing the patient for the balance.
How to Appeal Timely Filing Denials
To successfully appeal a timely filing denial (CO-29), you must provide credible proof of timely submission. This includes electronic data interchange (EDI) acceptance reports (999 or 277CA files), certified mail receipts for paper claims, or documentation showing a coordination of benefits (COB) delay from a primary payer.
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