AGAR Guide
RARCN29ReferenceHistorical / DeactivatedVerified Aug 15, 2026

RARC N29

Historical / Deactivated code: Heads up

RARC N29 is no longer valid for current transactions. It may still appear on older remittance advices — treat it as reference for historical documents only.

AR Guide Workflow

Documentation Required

The payer requested medical records, orders, notes, certificates, or other documentation before it will process the claim.

Open denial workflow

AR Guide explanation

What it means

Documentation, orders, notes, summaries, reports, or charts are missing.

AR Guide knowledge

Common denial category

Documentation Required — The payer requested medical records, orders, notes, certificates, or other documentation before it will process the claim.

AR Guide knowledge

Common usage

  • Medical necessity and documentation denials
  • Often accompanies CARC 16 or CARC 50

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.

Reference

Commonly paired CARCs

CARCs this remark commonly accompanies on the ERA/EOB, per the AR Guide pairing data.

  • CARC15The authorization number is missing, invalid, or does not apply to the billed services or provider.
  • CARC29The time limit for filing has expired.
  • CARC50These are non-covered services because this is not deemed a 'medical necessity' by the payer. Usage: Refer to the 835 Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if present.
  • CARC55Procedure/treatment/drug is deemed experimental/investigational by the payer. Usage: Refer to the 835 Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if present.
  • CARC150Payer deems the information submitted does not support this level of service.
  • CARC151Payment adjusted because the payer deems the information submitted does not support this many/frequency of services.
  • CARC163Attachment/other documentation referenced on the claim was not received.
  • CARC167This (these) diagnosis(es) is (are) not covered. Usage: Refer to the 835 Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if present.
  • CARC197Precertification/authorization/notification/pre-treatment absent.
  • CARC210Payment adjusted because pre-certification/authorization not received in a timely fashion
  • CARC233Services/charges related to the treatment of a hospital-acquired condition or preventable medical error.
  • CARC243Services not authorized by network/primary care providers.
  • CARC252An attachment/other documentation is required to adjudicate this claim/service. At least one Remark Code must be provided (may be comprised of either the NCPDP Reject Reason Code, or Remittance Advice Remark Code that is not an ALERT).
  • CARC288Referral absent

Help us keep this accurate

Report an error in this code’s guidance

Spotted something outdated or incorrect in the AR Guide guidance or the official description? Flag it — the report becomes a review item for our team and never changes the published page directly.

Do not include patient/member information or PHI — no patient names, member IDs, claim numbers, dates of birth or clinical information. This tool never stores PHI, and the server rejects it.