Health insurance denial & claim adjustment codes

What health insurance denial code N943 means on your EOB

The plan says the No Surprises Act does not apply here. Whether that is right depends on facility type, service, and whether you signed a notice-and-consent form.

What usually causes it

• The facility type falls outside the Act.
• You signed a notice-and-consent waiver.
• The service is not one the Act covers.

The documents that decide it

• The facility type and the service.
• Any consent form you signed, and when.
• Your EOB.

What to do next

Notice-and-consent waivers have strict timing and content requirements. A form signed at check-in often does not meet them — worth checking before accepting the balance.

This page explains what a code means. It is information, not advice — it does not tell you whether your specific claim should have been paid, and it is not legal, medical, or insurance advice. Your plan documents and your denial notice govern your situation.