One calendar year from the date of service, no grace period, and four exceptions that each need documentation before a contractor will look at the claim. Here is what the clock actually measures, what the appeals process expects, and the internal deadlines that keep claims from aging into a write-off.
Denial volume keeps climbing on the payer side. A workflow that holds up assigns every denial to a named owner, starts the appeal clock the day the remittance posts, and writes off only what cannot be recovered.
Timely filing limits differ by payer, by program and by contract. This reference gives the published window for Medicare, Medicaid, TRICARE and the major commercial payers, the rule behind each number, and the codes a late claim comes back with.
Every denial carries a group code, a reason code and usually a remark code. This is the working reference for the codes that carry most of the volume, who owns each fix, and what the filing and appeal clocks allow.
The federal dispute process for out-of-network claims was rewritten in 2026: the fee dropped from $115 to $15 per party, batching was rebuilt, and payers now have to say more on the remittance. Here is what changes in practice.
Denial rates dipped in 2026 while payer takebacks rose. Here is what the CARC codes on your remittance actually mean, which ones you can still fix, and the 30-day workflow that keeps them from coming back.
