How Do I Fight a Timely Filing Denial?

The Direct Answer

Fight a timely filing denial by submitting an appeal letter with clearinghouse acceptance timestamps proving your claim was originally filed within the payer's deadline — typically 90 to 365 days from date of service depending on the plan. CARC 29 timely filing denials account for roughly 8% of all claim denials. Appeals with 277CA acknowledgment files or clearinghouse reports showing on-time submission overturn at a 40% rate at first level.

How It Works

Pull your clearinghouse submission report for the original claim and identify the acceptance timestamp. Compare it against the payer's timely filing limit and the date of service on the denied claim. If the submission date falls within the filing window, your appeal argument is straightforward: the claim was filed on time and the payer's denial is incorrect.

Write your appeal citing the CARC 29 code, the payer's filing deadline, your actual submission date from clearinghouse records, and attach the 277CA acknowledgment, clearinghouse report, and original claim. If the payer previously accepted and processed related claims from the same batch, note that as additional evidence. Denial Appeal Pro generates CARC 29 appeals structured around submission proof requirements in under 60 seconds.

What You Get

A timely filing appeal letter with claim identification, CARC 29 denial reason, payer filing deadline cited, your documented submission date, and a list of proof attachments required. The letter requests claim reprocessing based on evidence that the original submission met the filing window.

Timely filing appeals are evidence-heavy but argument-light — the clearinghouse timestamp either proves on-time filing or it does not. Denial Appeal Pro structures the letter so your billing team focuses on gathering proof rather than drafting arguments.

Frequently Asked Questions

What is a timely filing denial?

A timely filing denial means the payer claims your claim was submitted after their filing deadline — typically 90 to 365 days from the date of service. CARC 29 is the standard code for this denial type.

What proof do I need to overturn a timely filing denial?

Clearinghouse acceptance reports showing the original submission date within the filing window are the strongest evidence. Also include 277CA acknowledgment files, payer portal submission screenshots, or certified mail receipts if applicable.

Can I appeal a timely filing denial if I truly filed late?

Appeals succeed when you can prove the claim was actually filed on time but the payer lost or misprocessed it. If the claim was genuinely filed late, the appeal options are limited unless extenuating circumstances like payer system outages apply.

How does Denial Appeal Pro handle CARC 29 appeals?

Denial Appeal Pro reads your CARC 29 denial and generates an appeal structured around submission proof requirements — listing the clearinghouse reports and acknowledgment files you should attach to prove timely filing.