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How to Appeal a Timely Filing Exceeded Denial

Claim denied because it was filed after the deadline. Nearly impossible to overturn without proof of original timely submission or extenuating circumstances.

~15% typical appeal success rate
Codes CO-29

Why insurers issue Timely Filing Exceeded denials

Claim denied because it was filed after the deadline. Nearly impossible to overturn without proof of original timely submission or extenuating circumstances. Recognizing the denial type is the first step — it determines which arguments and evidence will actually move the reviewer.

The appeal strategy that works

For Timely Filing Exceeded denials, the winning approach centers on proof of timely submission: directly rebut the insurer's stated reason, then back it with the evidence reviewers respect.

The strongest supporting evidence for this denial type:

Generate your appeal

CareCost Appeals classifies your denial, pulls the right evidence (real, verified clinical citations and the insurer's own policy where available), applies your state and federal appeal rights, and produces a ready-to-send letter — free.