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N576 Remark Code: Service Unrelated to Reported Injury

N576 means the payer determined the services are not related to the specific incident, claim, accident, or loss being reported. It is typically used by property and casualty payers, such as auto and workers' compensation insurers, that cover only care connected to a particular injury.

Quick facts

Code
N576 (RARC N576)
Status
Active In use since July 15, 2013.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The payer will not pay because it considers the care unrelated to the covered loss. Whether another payer covers it depends on the patient's other insurance.
  • OA (Other Adjustment): Some P&C payers use OA when the denial signals that another payer, such as health insurance, should be billed.
Official description
Services not related to the specific incident/claim/accident/loss being reported.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N576 means

Auto insurers, liability carriers, and workers’ compensation payers do not cover a patient’s general health care. They cover treatment for a specific accident, injury, or loss. N576 says the payer reviewed your services and concluded they are not connected to the incident on file.

This is a property and casualty remark code. Group-health rules about medical necessity or network status do not drive it. Relatedness to the injury does.

Common causes

  • Treatment of a pre-existing or unrelated condition was billed on the injury claim.
  • Diagnosis codes don’t reflect the injury, for example lacking the injury codes and external-cause detail that tie treatment to the accident.
  • New body parts were added later without documentation linking them to the incident.
  • The claim number or date of loss on the bill belongs to a different incident.

How to fix it

  1. Review what the payer accepted. Ask the adjuster which body parts or conditions are accepted on the claim.
  2. Split the services. Bill injury-related care to the P&C payer and unrelated care to the patient’s health plan.
  3. If you believe the care is related, send the records and a provider narrative explaining the connection, and follow the jurisdiction’s dispute process.
  4. Confirm the claim number and date of loss before resubmitting.

How to prevent it

At the first visit, record the mechanism of injury and the accepted body parts from the adjuster, and keep injury-related and unrelated services on separate claims.

Codes that may appear with N576

  • CO-P4 (Workers' Compensation claim adjudicated as non-compensable.): The workers' compensation claim was adjudicated as non-compensable for this service.
  • CO-219 (Based on extent of injury.): Based on extent of injury.
  • CO-P21 (Payment denied based on the Medical Payments Coverage (MPC) and/or Personal Injury Protection (PIP)): Denied under auto medical payments or personal injury protection rules.
  • N607 (Service provided for non-compensable condition(s).): The service was provided for non-compensable conditions.
  • N597 (Adjusted based on a medical/dental provider's apportionment of care between related injuries and other unrelated medical/dental conditions/injuries.): Adjusted based on apportionment between related and unrelated conditions.
  • N653 (The date of injury does not match the reported date of loss.): The date of injury does not match the reported date of loss.

N576 FAQ

Where does the patient's other care get billed?

Usually to the patient's health insurance, if they have it. Include the P&C denial if the health plan asks for it.

How do I show the care is related?

Through the medical record: the history, mechanism of injury, and the provider's statement linking the condition to the accident or work incident.

Does N576 apply to group health claims?

It is designed for claims tied to a specific accident or loss, so it is rarely seen outside auto, liability, and workers' compensation.