N26 remark code

Remittance advice remark code N26. Remark codes add detail to the reason code on the same claim line.

Itemized bill 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 N26 means

The payer needs a line-by-line itemized statement of charges before it can process the claim.

Some payers will not price a claim, especially a high-dollar facility claim, an out-of-network claim or a claim with unlisted supplies, without a detailed list of every charge. N26 says that list was not received.

It explains a missing information reason code, often 16 or 252, and usually means the claim is pending or denied until the itemization arrives.

Common causes

• A large inpatient or outpatient facility claim triggered the payer's itemized bill requirement.
• Supply or pharmacy charges were billed as totals without detail.
• The payer's request for an itemized statement was not answered.

What to do next

1. Print a full itemized statement from the billing system for the account.
2. Send it through the payer's attachment process referencing the claim number.
3. Make sure the itemized total matches the billed total on the claim.
4. Set a follow-up date to confirm the claim was reprocessed.

Related codes

• 16 (reason code) Missing information or billing error
• 252 (reason code) Attachment or documentation required
• N706 (remark code) Documentation missing