AGAR Guide
CARC29ReferenceCurrentVerified Aug 15, 2026

CARC 29

AR Guide workflow

Step-by-step: Timely Filing

✓ Workflow verified Aug 15, 2026 · Verified via review of official sources and AR Guide practice testing — not payer policy. View the full guide

  1. VerifySteps 1–11

    1. The payer's filing deadline and how it is measured

    2. Date the claim was actually received by the payer

    3. Original submission date and channel (with proof)

    4. Claim history — was this billed before?

    5. Whether an extension or exception could apply

    6. CARC 29 and the accompanying remark code on the ERA/EOB

    7. Identify the payer's filing deadline and how it is measured

    8. Confirm the date the claim was actually received by the payer

    9. Check for extensions: secondary claims, crossover, retroactive eligibility, state laws

    10. Review the original claim history for when the first submission occurred

    11. Confirm whether the denial is based on the claim date or the appeal date

  2. ActSteps 12–15

    1. If the claim was submitted on time, appeal with proof of timely submission (submission receipt, clearinghouse report, portal confirmation)

    2. If an extension or exception applies, file the appeal citing it

    3. If truly late, determine whether a client/contract arrangement allows a courtesy write-off or patient billing

    4. Set up deadline tracking so future claims are submitted with lead time

  3. Document & QASteps 16–22

    1. Date and channel of the original submission with proof

    2. Clearinghouse or portal submission reports

    3. Payer correspondence showing the deadline basis

    4. Any extension documentation (e.g., retroactive eligibility letter)

    5. Log submission dates for every claim so timely-filing disputes are provable

    6. Flag claims approaching the filing deadline before submission

    7. Track deadline exceptions per payer in the AR reference notes

Appeal with proof of timely submission — or close it: Note

A timely-filing denial is only appealable if you can prove the claim was submitted on time or an extension applies. If the claim was genuinely late, an appeal will not change the result.

If you take the wrong path: Appealing a genuinely late claim wastes the appeal window. Missing a valid extension (secondary claims, crossover, retroactive eligibility) leaves money on the table.

AR Guide explanation

What it means

The claim was submitted after the payer's filing deadline, so the payer denied or reduced the claim.

AR Guide knowledge

Common denial category

Timely Filing — The payer denied the claim because it was submitted after the filing deadline. Success depends on proving timely submission or finding a valid extension.

AR Guide knowledge

Most common causes

  • Missed the payer's timely filing deadline
  • Claim initially sent to the wrong payer, delaying the correct submission
  • Appeal or corrected claim submitted past the deadline

AR Guide knowledge

Action in your PM/EMR system

In your PM system: pull the original submission record (clearinghouse report, portal confirmation) and check the received date against the payer's deadline. If an extension applies, attach the supporting document and appeal through your appeals queue rather than resubmitting.

Illustrative scenario

Real-world example

A claim was denied with CARC 29 for filing past the deadline, but the clearinghouse report showed the original transmission was on time. The provider appealed with the submission receipt and the denial was reversed.

Example — not a claim about any specific payer or account.

AR Guide knowledge

What AR should verify

  1. Confirm the payer's filing deadline and how it is measured (date of service, date of discharge, date of prior denial)
  2. Check the date the claim was received vs. the deadline
  3. Check for deadline extensions (e.g., secondary claims, crossover, retroactive eligibility)

AR Guide knowledge

Recommended action

  1. If an extension or exception applies, appeal with proof of timely submission
  2. If truly late, write off per policy or pursue patient responsibility where allowed

Appeal template

Timely Filing Appeal — Proof of Timely Submission

Appeal a timely-filing denial with proof the claim was submitted within the deadline — submission receipt, clearinghouse report, or portal confirmation.

For: Billing staff appealing a CARC 29 denial where the claim was submitted on time. · Last reviewed 2026-08-16

Download .doc template

Educational starting point — not legal advice. Customize every [bracketed] placeholder and verify the payer's appeal address and deadline from the payer's own documentation. All templates

AR Guide knowledge

Escalation

  • Check state prompt-pay laws — some impose deadlines on payers that can support an appeal.

AR Guide knowledge

QA checkpoint

  • Track filing deadlines in the AR system
  • Flag claims approaching the deadline before submission

About this guidance: Note

AR Guide knowledge is general reference content written by our team — it is not payer-specific policy and never replaces the payer’s documentation or your contract. Always confirm specifics with the payer.

Priority 2

Commonly paired RARCs

RARCs commonly accompany CARC 29 on the ERA/EOB. Select the one on your line to focus the workflow, or use the list as a lookup.

  • RARCMA119Provider level adjustment for late claim filing applies to this claim.
  • RARCN29Missing documentation/orders/notes/summary/report/chart.Send the requested documentation through the payer's preferred channel and reference the claim number. Track the submission so it can be proven later.

Priority 3

Payer-specific nuance

How major payers handle this denial — what AR Guide has verified, and what you must confirm with the payer. We never publish payer handling we have not verified.

Medicare

Filing deadlines, how they are measured, and extension rules vary by payer, line of business and state law. AR Guide does not publish filing deadlines — confirm the deadline, its measurement basis, and any exceptions with the payer before appealing.

Medicaid

Filing deadlines, how they are measured, and extension rules vary by payer, line of business and state law. AR Guide does not publish filing deadlines — confirm the deadline, its measurement basis, and any exceptions with the payer before appealing.

UnitedHealthcare

Filing deadlines, how they are measured, and extension rules vary by payer, line of business and state law. AR Guide does not publish filing deadlines — confirm the deadline, its measurement basis, and any exceptions with the payer before appealing.

Aetna

Filing deadlines, how they are measured, and extension rules vary by payer, line of business and state law. AR Guide does not publish filing deadlines — confirm the deadline, its measurement basis, and any exceptions with the payer before appealing.

Cigna

Filing deadlines, how they are measured, and extension rules vary by payer, line of business and state law. AR Guide does not publish filing deadlines — confirm the deadline, its measurement basis, and any exceptions with the payer before appealing.

Anthem (BCBS)

Filing deadlines, how they are measured, and extension rules vary by payer, line of business and state law. AR Guide does not publish filing deadlines — confirm the deadline, its measurement basis, and any exceptions with the payer before appealing.

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