Insurance Denied Out-of-Network Claim — Your Rights Under the No Surprises Act

You went to a hospital, had a procedure, saw a specialist — and didn't know (or couldn't control) that the provider was out of your insurance network. Now you're holding a bill that is shocking, or your claim has been denied as out-of-network, and your insurer is offering to pay a fraction of what they would pay for in-network care.

This situation is far too common. And since January 1, 2022, you have significantly stronger federal protections against it.

The No Surprises Act fundamentally changed what insurance companies can do to you when out-of-network care happens in certain circumstances. Here's what you need to know.

What the No Surprises Act Does for You

The No Surprises Act (NSA) provides protection in three key scenarios:

1. Emergency care at out-of-network facilities

When you need emergency care, you can't always choose which hospital or which providers treat you. The NSA recognizes this reality:

• Insurers must cover emergency services at an out-of-network facility using in-network cost-sharing (your deductible and copay as if it were in-network)
• Providers cannot balance bill you — they cannot charge you the difference between what they bill and what your insurer pays for emergency care
• This applies to hospitals, free-standing emergency departments, and air ambulance services

If you received emergency care and your insurer is denying the claim or applying out-of-network cost-sharing, the No Surprises Act may require them to cover it at in-network rates.

2. Out-of-network providers at in-network facilities

This is one of the most common "surprise billing" scenarios: you go to an in-network hospital or surgery center, but one of the providers who treats you — an anesthesiologist, radiologist, pathologist, or assistant surgeon — is out of network.

Under the NSA:

• These providers cannot balance bill you beyond your in-network cost-sharing
• Your insurer must cover these services as in-network

This is a major protection. Before the NSA, patients were routinely hit with massive bills from out-of-network anesthesiologists they never chose and often didn't even know were involved in their care.

3. Air ambulance services

Air ambulance bills were among the most notorious surprise billing horror stories. The NSA extends the balance billing prohibition to air ambulance services provided by non-participating providers.

What the No Surprises Act Does NOT Cover

The NSA's protections are significant but not unlimited:

• Scheduled, non-emergency care where you chose an out-of-network provider and received proper notice and consent is not protected
• Ground ambulance services (air ambulance is covered; ground is not, though some states have additional protections)
• Non-emergency care at out-of-network facilities you voluntarily chose (you had the option to go in-network)

For voluntary out-of-network care, different rules apply (see below).

What to Do If the No Surprises Act Should Apply

If you believe the NSA protects you from your out-of-network denial or surprise bill:

Step 1: Identify whether NSA protections apply

Was this emergency care? Were you at an in-network facility but treated by an out-of-network provider you didn't choose? Did you receive air ambulance services? If yes to any of these, the NSA likely applies.

Step 2: Dispute the bill directly with the provider

Under the NSA, you should not be billed more than your in-network cost-sharing. If you received a bill exceeding that, dispute it with the provider directly, citing the No Surprises Act and your right to be held harmless for the balance.

Step 3: File an appeal with your insurer

Formally appeal any denial or out-of-network cost-sharing that violates the NSA. Your appeal letter should:

• Cite the No Surprises Act (42 USC 300gg-111)
• State the specific circumstance (emergency care / in-network facility with OON provider / air ambulance)
• Request that the claim be processed at in-network cost-sharing rates

Step 4: File a federal complaint

The NSA is enforced by the Departments of Health and Human Services, Labor, and Treasury. You can file a complaint online at the CMS No Surprises Act complaint portal. NSA complaints receive regulatory attention and can result in enforcement action against insurers and providers.

Step 5: Use the NSA independent dispute resolution process

For disputes between providers and insurers about payment amounts, there is a separate independent dispute resolution (IDR) process. This is typically used by providers, but understanding it exists helps explain how the system resolves billing disputes.

For Voluntary Out-of-Network Care: Fighting Standard OON Denials

If your situation doesn't fall under NSA protections — you voluntarily sought out-of-network care — your options are:

Medical necessity exceptions: If your condition requires care that isn't adequately available in-network (rare disease specialist, specific surgical technique, geographic access issues), you may be able to argue that out-of-network care was medically necessary. Request that the claim be processed at in-network rates with a waiver of the out-of-network differential.

Network adequacy arguments: Your plan must maintain an adequate network. If no in-network provider with appropriate expertise exists for your condition, file a complaint about network inadequacy with your state insurance commissioner.

Direct negotiation: In some cases, directly negotiating with your insurer's out-of-network appeal unit, with documentation of medical necessity, can result in reimbursement at higher rates than initially offered.

The No Surprises Act Changed the Game

Before 2022, out-of-network surprise billing was a crisis. Patients were receiving bills for tens or hundreds of thousands of dollars for care they didn't choose and couldn't have anticipated. The NSA eliminated much of this.

But the law only helps you if you know about it and use it. Many patients are still paying bills they don't legally owe because they don't know the law applies to their situation.

Fight Back With ClaimBack

ClaimBack helps patients navigate out-of-network denials, No Surprises Act protections, and surprise billing disputes.

Start your appeal at https://claimback.app/appeal

The law is on your side. Make them follow it.

Related Reading

• What Are My Rights When My Insurance Claim Is Denied?
• Internal vs. External Insurance Appeal: Which Should You File?
• How to Write an Insurance Appeal Letter