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N508 Remark Code: Real-Time Member Responsibility

N508 is an alert that the real-time claim adjudication response shows the member's responsibility to the provider for the services reported. The member will receive an explanation of benefits electronically or by mail and should contact the insurer with questions.

Quick facts

Code
N508 (RARC N508)
Status
Active In use since November 1, 2008; last modified March 1, 2017.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • PR (Patient Responsibility): The amounts shown are the member's responsibility to the provider as adjudicated in real time.
Official description
Alert: This real-time claim adjudication response represents the member responsibility to the provider for services reported. The member will receive an Explanation of Benefits electronically or in the mail. Contact the insurer if there are any questions.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N508 means

Real-time claim adjudication lets a provider submit a claim at the point of service and get the payer’s decision back within moments. N508 appears on that immediate response and explains the patient amounts: this is what the member owes you for the services reported, based on actual adjudication. The member will get an EOB from the insurer as well.

It is informational. Nothing is being denied or requested.

What to do

  1. Collect the member responsibility shown, according to your financial policy.
  2. Post the real-time response so staff can see it before the remittance arrives.
  3. Match the later remittance to the real-time response. Look for N512 (no change) or N513 (changed) on the remit.
  4. Refer coverage questions to the insurer, as the alert suggests.

Posting real-time responses promptly prevents staff from billing patients twice or misreading the eventual remittance.

Codes that may appear with N508

  • PR-1 (Deductible Amount): Deductible applied in the real-time adjudication.
  • PR-2 (Coinsurance Amount): Coinsurance the member owes.
  • PR-3 (Co-payment Amount): Co-payment the member owes.
  • N506 (Alert: This is an estimate of the member's liability based on the information available at the time the estimate was processed.): An estimate rather than an adjudication; amounts may change.
  • N512 (Alert: This is the initial remit of a non-NCPDP claim originally submitted real-time without change to the adjudication.): The later remittance for a real-time claim, with no change to the adjudication.
  • N513 (Alert: This is the initial remit of a non-NCPDP claim originally submitted real-time with a change to the adjudication.): The later remittance for a real-time claim, where the adjudication changed.

N508 FAQ

Is N508 an estimate?

No. It accompanies a real-time adjudication, meaning the payer processed the claim at the time it was submitted. Estimates carry different alerts, such as N506.

Can I collect the member amount right away?

Generally yes, following your financial policy and any payer contract terms, since the amount reflects adjudicated member responsibility.

Where do patients direct questions?

The alert says to contact the insurer. Patients will also receive their own explanation of benefits.