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N512 Remark Code: Real-Time Claim Remit, No Change

N512 is an alert that this is the initial remittance for a non-NCPDP (non-pharmacy) claim originally submitted in real time, and the adjudication has not changed from the real-time response. The payment and patient amounts match what you already received.

Quick facts

Code
N512 (RARC N512)
Status
Active In use since November 1, 2008.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • OA (Other Adjustment): Informational. The alert explains the remittance's relationship to the earlier real-time response.
  • PR (Patient Responsibility): Patient responsibility on the remittance matches the real-time adjudication.
Official description
Alert: This is the initial remit of a non-NCPDP claim originally submitted real-time without change to the adjudication.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N512 means

When a claim is adjudicated in real time, the provider gets an immediate response at the point of service. The formal remittance and payment come later in the payer’s normal cycle. N512 appears on that later remittance to say two things: this is the first remit for that real-time claim, and nothing about the adjudication changed.

In short, the numbers on this remittance should match the real-time response.

What to do

  1. Match the remittance to the real-time response already on the account.
  2. Post the payment once. Avoid recording both the real-time response and this remittance as separate payments.
  3. Confirm patient balances already collected at the visit agree with the remittance, and adjust only if they do not.

N512 requires no correction or appeal.

Codes that may appear with N512

  • PR-1 / PR-2 / PR-3 (Deductible, coinsurance, and co-payment.): Patient cost-sharing that should match the real-time response.
  • CO-45 (Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.): Contractual adjustment, which also should match the real-time adjudication.
  • N513 (Alert: This is the initial remit of a non-NCPDP claim originally submitted real-time with a change to the adjudication.): The same situation, except the adjudication changed after the real-time response.
  • N508 (Alert: This real-time claim adjudication response represents the member responsibility to the provider for services reported.): Appears on the original real-time response describing member responsibility.
  • N889 (Alert: This claim was originally processed in real-time, and we sent a real-time 835 response.): Another alert that a claim was processed in real time with a real-time 835 response.

N512 FAQ

What does non-NCPDP mean?

NCPDP is the standard used for retail pharmacy claims. Non-NCPDP means this is a medical, dental, or institutional claim, not a pharmacy claim.

Do I post this payment again?

Post it once. If you already recorded the real-time response as expected payment, match this remittance to it rather than creating a second payment.

What if the amounts do not actually match?

Contact the payer. N512 says the adjudication did not change, so a difference could point to a posting error on your side or a payer-side issue worth clarifying.