N729 remark code

Remittance advice remark code N729. Remark codes add detail to the reason code on the same claim line.

Medical record missing

Unofficial reference. This is our own plain-English explanation, not the official code text. Payer rules differ. Verify with the payer and the official X12 code list. AlphaPrefix is not affiliated with X12, CMS or any payer. Data last updated Nov 11, 2026.

What N729 means

The patient's medical or dental record for this service was not received, so the payer could not support the claim.

N729 is more specific than a general documentation remark. The payer wants the chart or record for the date of service itself, often for a medical necessity or coding review.

It usually comes with reason code 16, 252 or 50. Whether the claim is pended or denied depends on the payer's process.

Common causes

• The payer sent a records request that went unanswered or to the wrong address.
• The records sent were for a different date of service.
• A post-payment review asked for records and none came back.

What to do next

1. Find the payer's request and confirm what records and dates it asked for.
2. Send complete, signed records for the date of service with the claim number on each page.
3. Keep proof of submission and follow up on the claim status.
4. Route future records requests to one owner so none are missed.

Related codes

• N706 (remark code) Documentation missing
• N10 (remark code) Adjusted after clinical or peer review
• 252 (reason code) Attachment or documentation required