Quick Answer
The No Surprises Act generally protects people with private insurance from unexpected out-of-network charges for most emergency services, certain non-emergency services at in-network facilities, and air ambulance services. Patients do not use the federal provider-payer IDR process themselves; challenge the claim through the plan's appeal process and contact the No Surprises Help Desk if the billing protections appear to have been violated.
Official sources: CMS consumer protections · CMS Know Your Rights
Reviewed against official CMS guidance: July 31, 2026 · Who built AppealArmor
Out-of-Network Appeal Help
Federal law prohibits surprise medical billing for emergency care and many non-emergency services. If your insurer denied your out-of-network claim, you likely have stronger protections than you realize.
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Got a denial letter? Upload a PDF or a photo of it, check the details we read from it, and we’ll draft your appeal.
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The No Surprises Act provisions enacted in the Consolidated Appropriations Act, 2021 (Public Law 116-260) took effect January 1, 2022. They address unexpected bills from out-of-network providers a patient did not choose or could not reasonably avoid.
All emergency care must be covered at in-network rates, regardless of which facility or provider you see. No balance billing allowed.
Out-of-network providers at in-network facilities (anesthesiologists, radiologists, etc.) cannot balance bill you if you did not choose them.
Out-of-network air ambulance services are covered at in-network rates. You pay only your in-network cost-sharing amount.
Emergency care coverage is based on your symptoms at the time you sought treatment, not the final diagnosis. If a reasonable person would have believed they needed emergency care, the insurer must cover the visit. Insurers cannot retroactively deny emergency claims because the final diagnosis was not life-threatening.
Official source: CMS consumer protections. These rules do not cover every out-of-network service, and public programs such as Medicare and Medicaid use separate protections.
Upload the insurer's denial letter or the explanation of benefits (EOB) that shows the denial. AppealArmor reads the denial and your plan type, and you confirm every detail before anything is written.
The letter quotes the federal appeal rules for your type of plan. It does not cite the No Surprises Act or state balance-billing laws for you, so name them yourself if they apply.
Your packet is the appeal letter (Word and PDF) and a Next Steps sheet: where to send it, your deadline as your letter states it, who to copy, and who to contact if it is denied again.
If you chose to go out-of-network, you may still have strong grounds for appeal. Many states require insurers to cover out-of-network care at in-network rates when their network is inadequate. This applies when:
Federal protections generally apply to most emergency services, certain non-emergency services from out-of-network providers at in-network facilities, and covered air-ambulance services. Exceptions and consent rules exist, so compare the bill with the scope described by CMS.
Emergency coverage is determined by your symptoms, not the final diagnosis. If a reasonable person with average medical knowledge would have believed they needed emergency treatment based on their symptoms, the visit must be covered. Chest pain that turns out to be heartburn is still a covered emergency visit because a prudent layperson would seek immediate care for chest pain.
For covered emergency services, federal law generally limits cost sharing and bars balance billing. If you believe the protection applies, contact the No Surprises Help Desk at 1-800-985-3059. The federal payment dispute process is between providers and payers; patients do not initiate it.
You may still have a plan appeal based on network adequacy, continuity of care, an approved referral, or another plan provision. Those rights vary by state and plan. Use the denial notice and contact the relevant regulator when the route is unclear.
Upload your denial letter — a PDF or a photo of the paper letter works. You check every detail we read from it, then we draft the appeal and quote the federal appeal rules for your type of plan. You read it, change anything you want, and send it yourself.
Start my free appeal →Free, always. No account. You review every word before you send it — and we never send anything to your insurer. You do.
