N706 remark code

Remittance advice remark code N706. Remark codes add detail to the reason code on the same claim line.

Documentation 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 N706 means

The payer needed supporting documentation for this service and did not receive any.

N706 is a broad remark meaning no records were received to support the service. It often follows a records request or applies to services that always need documentation, such as unlisted procedures.

It usually explains reason code 16, 252 or 50. Other remark codes on the line may say exactly which document is wanted.

Common causes

• A records request from the payer was not answered by its deadline.
• The claim was for a service that requires an attachment and none was sent.
• Records were sent but not linked to the claim number.

What to do next

1. Check for any records request letter or electronic request tied to the claim.
2. Send the relevant documentation through the payer's attachment process with the claim number.
3. Confirm receipt and set a follow-up date for reprocessing.
4. Build attachments into the workflow for services that always need them.

Related codes

• N729 (remark code) Medical record missing
• N350 (remark code) Unlisted code needs a description
• 252 (reason code) Attachment or documentation required