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N845 Remark Code: Alert on Nebraska LB997

N845 is an alert referencing Nebraska Legislative Bill 997 (July 24, 2020), the Out of Network Emergency Medical Care Act. It flags that the state law is relevant to the claim, for example to patient billing protections, without itself changing the claim.

Code: N845 (RARC N845)
Status: Active In use since March 1, 2021.
Code set: Remittance Advice Remark Codes (RARC)
Group codes: PR (Patient Responsibility): Patient responsibility on the claim should be read in light of the Nebraska act's protections.
Official description: Alert: Nebraska Legislative LB997 July 24, 2020 - Out of Network Emergency Medical Care Act.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified: September 24, 2026 against the official X12 list.

What N845 means

N845 is the alert form of a Nebraska-specific remark. It names LB997, the state’s 2020 Out of Network Emergency Medical Care Act, without saying the claim was processed under it. That’s the job of N844. Payers use the alert to point providers to the law when it’s relevant to the claim, most often for out-of-network emergency care and patient billing.

What to do

Read the CARCs on the claim to see how it actually paid.
Bill the patient only the PR amount. The act is aimed at protecting patients from surprise out-of-network emergency bills.
Check whether N844 also appears. If it does, the act shaped payment on those lines.
Ask the payer if it’s unclear why the alert appeared or whether the act affected payment.

Codes that may appear with N845

CO-45 (Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.): The charge was reduced to the allowed amount.

N844 (This claim, or a portion of this claim, was processed in accordance with the Nebraska Legislative LB997 July 24, 2020 - Out of Network Emergency…): The non-alert version, used when the claim was actually processed under the act.
N858 (Alert: State regulations relating to an Out of Network Medical Emergency Care Act were applied to the processing of this claim.): A general alert that a state out-of-network emergency care act was applied.

N845 FAQ

How is N845 different from N844?

N844 says the claim or part of it was processed under the act. N845 is an alert that refers to the act; read it with the CARCs on the claim to see what, if anything, changed.

Do I need to take action?

Not on the claim itself. Make sure you don't bill the patient beyond what the payer reported as patient responsibility.

Where can I read the act?

The Nebraska Legislature publishes enacted bills, and state regulators may issue related guidance.

Important: read before using this information

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