N271 Remark Code: Other Provider Secondary ID
N271 means a secondary identifier for an 'other provider' on the claim was missing, incomplete, or invalid. This is an ID in addition to the NPI, such as a license or payer-assigned number, for one of the extra provider roles on an institutional claim.
Quick facts
- Code
- N271 (RARC N271)
- Status
- Active In use since December 2, 2004.
- Code set
- Remittance Advice Remark Codes (RARC)
- Group codes
-
- CO (Contractual Obligation): The facility must correct or remove the secondary ID and resubmit. The patient is not responsible.
- Official description
Missing/incomplete/invalid other provider secondary identifier.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026- Last verified
- against the official X12 list.
What N271 means
Facility claims can list additional providers in flexible “other” roles. Each can carry an NPI and, optionally, a secondary identifier preceded by a qualifier. N271 tells you the payer found that secondary identifier missing when it was required, or unreadable when it was sent.
Because the payer is asking only for identifier data, this remark (normally alongside CARC 16) calls for a corrected claim rather than an appeal.
Common causes
- A qualifier was entered without a number, or a number without a qualifier.
- The qualifier indicated one kind of ID (say, a state license) while the number was actually a payer-assigned ID.
- The payer requires a secondary ID for the role reported, but your system only sends NPIs for other providers.
- A license number from another state, or an outdated payer ID, was used.
- Data from a prior claim template carried over into the secondary ID field.
How to fix it
- Identify which other provider entry the remark concerns and what role its qualifier describes.
- Check the payer’s institutional claim instructions to see whether it requires a secondary ID for that role.
- If required, obtain the current number and correct qualifier; if not, clear the field.
- Update the provider’s payer-specific settings so the fix applies to future claims.
- Submit a replacement claim with frequency code 7 and the original claim number.
How to prevent it
Keep secondary identifiers tied to both provider and payer, and leave them empty by default. Adding a secondary ID should be a deliberate setup step for payers that ask for one. Trending remarks by payer, as covered in our CARC and RARC analysis guide, shows whether N271 is a one-off or a missing payer rule.
Codes that may appear with N271
- CO-16 (Claim/service lacks information or has submission/billing error(s).): Information missing or invalid; N271 identifies the other provider's secondary identifier.
Related and easily confused codes
- N270 (Missing/incomplete/invalid other provider primary identifier.): The other provider's NPI is the problem.
- N269 (Missing/incomplete/invalid other provider name.): The other provider's name is the problem.
- N254 (Missing/incomplete/invalid attending provider secondary identifier.): The secondary-ID problem for the attending provider.
N271 FAQ
Where is the other provider secondary ID on the UB-04?
Form locators 78 and 79 have a qualifier and ID area next to the NPI for that purpose.
Is a secondary ID ever required?
Some payers require a license or proprietary ID for certain roles, while many accept the NPI alone. Follow the specific payer's instructions.
Can sending an unneeded secondary ID cause N271?
It can if the value is malformed or its qualifier is wrong. If a payer doesn't require it, it is usually safer to omit it.