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N720 Remark Code: Patient Overpaid, Refund May Be Due

N720 is an alert that the patient appears to have paid more than the patient responsibility shown on the remittance. You may need to refund the difference between what the patient paid and the amount the payer assigned to them.

Quick facts

Code
N720 (RARC N720)
Status
Active In use since March 1, 2014.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • PR (Patient Responsibility): The PR amounts on the remittance are the patient's actual responsibility. Anything the patient paid beyond that total is a potential credit owed back.
Official description
Alert: The patient overpaid you. You may need to issue the patient a refund for the difference between the patient's payment and the amount shown as patient responsibility on this notice.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N720 means

N720 is informational. It does not change the payment on the claim. The payer is flagging that, according to its records, the patient paid you more than the deductible, coinsurance, and copay it assigned as patient responsibility. This often happens when an estimate collected at check-in turns out higher than the final adjudicated share.

The wording says you “may” need to refund, because the payer does not see your full ledger. The patient may have paid toward other services, or the payment may already have been refunded.

What to do

  1. Compare the patient’s payments for this date of service with the total PR amounts on the remittance.
  2. If there is a credit, confirm it is not owed on another open service for the same patient.
  3. Issue the refund or credit according to your refund policy, contract terms, and applicable state rules. Document the date and amount.
  4. Watch for later adjustments on the claim that could change the patient’s share again.

Reviewing N720 alerts regularly keeps patient credit balances from sitting on your books unnoticed.

Codes that may appear with N720

  • PR-1 / PR-2 / PR-3 (Deductible, coinsurance, and co-payment amounts.): These PR adjustments define what the patient owes; N720 compares them with what the patient paid.
  • CO-45 (Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.): The contractual reduction often explains why the patient's share ended up lower than the estimate collected at the visit.
  • MA10 (Alert: The patient's payment was in excess of the amount owed.): A stronger version: the patient's payment exceeded the amount owed and you must refund it.
  • MA59 (Alert: The patient overpaid you for these services.): A Medicare overpayment alert with a specific refund timeframe in its text.
  • N857 (This claim has been adjusted/reversed.): Tells you to refund a copayment collected on a claim that was adjusted or reversed.

N720 FAQ

Do I have to refund the patient when I see N720?

Review the account first. If the patient's payments on this service exceed the PR total, a refund is generally due. Your payer contract, state law, or program rules may set how and when.

Can I apply the credit to another balance instead?

Some practices do this with the patient's consent, where contracts and state law allow. Do not apply it automatically without checking those rules.

Does N720 change what the payer paid?

No. It is an alert about the patient's side of the account. The payer's payment and adjustments on the claim stay as reported.