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N15 Remark Code: Bill Newborn Services Separately

N15 means services provided to a newborn must be billed on a separate claim. The payer will not process the baby's services when they are combined with the mother's claim or billed under her identity.

Quick facts

Code
N15 (RARC N15)
Status
Active In use since January 1, 2000.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The line is denied until it is billed correctly. The provider should not bill the family for it while it can be resubmitted.
  • OA (Other Adjustment): Some payers report it as another adjustment, meaning a claim-format issue rather than a benefit decision.
Official description
Services for a newborn must be billed separately.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N15 means

A delivery creates two patients. The mother’s labor, delivery, and postpartum care belong on her claim. The newborn’s routine nursery care, exams, screenings, and any other services belong on a claim for the baby. When a payer receives newborn charges on the mother’s claim, it may deny those lines with N15 and ask for a separate submission.

The remark often accompanies CARC 16 (billing error) or CARC 96. It is a formatting issue: the services may be fully covered once billed correctly. A few plans instead include routine newborn care in the mother’s allowance, which is what CARC 128 reports.

Common causes

  • Nursery or newborn exam charges were added to the mother’s account in the hospital or practice system.
  • The claim listed the mother as the patient for services provided to the baby.
  • The newborn’s own ID was not available, so staff billed everything under the mother.
  • Twins or multiples were combined on one claim.

How to fix it

  1. Remove the newborn lines from the mother’s claim with a corrected claim (resubmission code 7), if the payer requires the original to be fixed.
  2. Create a new claim for the baby. Enter the baby’s name, date of birth, and sex as the patient. Use the subscriber and member ID the payer requires for newborns.
  3. Use the right diagnoses. Newborn claims use newborn-specific ICD-10-CM codes rather than the mother’s delivery codes.
  4. Bill each multiple separately. Twins and triplets each need their own claim with a distinct identity.

How to prevent it

  • Register every newborn as a separate patient account at birth.
  • Keep a payer list showing how each plan wants newborns identified before their own ID is issued.
  • Review maternity claims for newborn charges before release.

Codes that may appear with N15

  • CO-16 (Claim/service lacks information or has submission/billing error(s).): A submission or billing error, here combining newborn and maternal services.
  • CO-96 (Non-covered charge(s).): Non-covered on this claim; N15 explains the newborn charge belongs on its own claim.
  • CO-128 (Newborn's services are covered in the mother's Allowance.): The opposite rule: the newborn's services are covered in the mother's allowance.
  • CO-34 (Insured has no coverage for newborns.): The insured has no coverage for newborns, a coverage issue rather than a billing format issue.
  • N61 (Rebill services on separate claims.): A general instruction to rebill services on separate claims.

N15 FAQ

Which ID do I use for the newborn?

Use whatever the payer requires. Some plans issue the baby's own member ID quickly, some Medicaid programs assign a temporary newborn ID, and some allow billing under the parent's subscriber ID with the baby as the patient for a limited period.

Does N15 apply to the hospital or the physician?

It can apply to either. Hospitals bill a separate newborn claim, and pediatricians or other professionals bill newborn care on their own claims as well.

What if the baby is not yet enrolled?

Enrollment windows for newborns vary by plan and program. Work with the family to add the baby as soon as possible, then bill the separate claim.