Surprise Medical Bill? What Can You Do in 2026?

What does the No Surprises Act protect in 2026?

The No Surprises Act generally limits certain unexpected out-of-network charges for people with most employer, Marketplace, Federal Employees Health Benefits, and individual-market health coverage. Its main protections apply to most emergency services, certain non-emergency services connected to a visit at an in-network facility, and covered air ambulance services.

The law does not make care free. When a service is protected, you can still owe the in-network deductible, copay, or coinsurance that applies under your plan. The protection is against being charged more merely because a covered emergency provider or certain facility-based clinicians were outside your network.

Synthetic example notice: Every person, service, and dollar amount in this guide is fictional. The examples are simplified teaching tools, not records from a patient, customer, insurer, or real medical bill.

This guide was reviewed against current federal sources on October 16, 2026. Plan terms and state protections vary. Use the medical billing glossary for unfamiliar terms, then verify how your own claim was processed with the insurer and provider.

Which emergency services are generally protected?

If your health plan covers emergency care, federal protections generally apply when emergency services are delivered at a hospital emergency department or an independent freestanding emergency department. The plan generally cannot require prior authorization for that emergency care or calculate your share using a higher out-of-network cost-sharing rate.

The protection applies to the emergency facility and the clinicians providing covered emergency services there. That matters because an in-network hospital can use an out-of-network emergency physician, radiologist, or other professional whom you did not select.

Some services after stabilization can also remain protected. However, an out-of-network provider may seek notice and consent for qualifying post-stabilization care only when strict conditions are met, including that the patient is able to consent and can travel safely to an available in-network provider without medical or emergency transportation. Notice and consent is never permitted for emergency services before stabilization.

The safest consumer-facing rule is therefore not “every service after an ER visit is covered.” It is: most covered emergency services receive in-network cost-sharing treatment, but post-stabilization circumstances need a closer look. The guide to how emergency room billing works explains the separate facility and professional claims that may follow one visit.

What other care can receive federal protection?

The No Surprises Act also generally addresses two situations where a patient may have little practical control over network status.

First, it covers certain non-emergency services from an out-of-network provider during a visit to an in-network hospital, hospital outpatient department, or ambulatory surgical center. Ancillary services such as anesthesiology, radiology, pathology, neonatology, and services from assistant surgeons, hospitalists, and intensivists receive strong protection. Those providers cannot use a notice-and-consent form to make you waive the federal protection.

Second, the Act protects covered air ambulance services furnished by an out-of-network air ambulance provider. An air ambulance provider may not ask a patient to waive that protection. There is an important limit: the Act does not require a health plan to cover a kind of air ambulance service that the plan otherwise excludes. Ask the plan whether the service was a covered benefit and how it calculated the patient share.

See Balance Billing or Surprise Billing? 2026 Differences for a closer comparison of a permissible out-of-network charge and a federally protected surprise bill.

What is not covered by the federal law?

The most important categorical gap is ground ambulance service. Federal No Surprises Act protections generally do not cover a ground ambulance ride. A state law, local rate rule, or the health plan itself may still limit what can be charged, so an out-of-network ground ambulance bill deserves a state- and plan-specific check.

Other important limits include:

• Non-emergency care deliberately received at an out-of-network facility is generally outside the central federal protection.
• A health plan is not required by the Act to cover a service that is excluded from the plan.
• Limited-scope dental or vision coverage, short-term limited-duration coverage, health care sharing ministries, and fixed-indemnity coverage are generally outside these protections.
• Medicare, Medicaid, Indian Health Service, Veterans Affairs health care, and TRICARE use other billing protections and complaint paths.
• A valid notice and consent can waive protection for certain scheduled non-emergency or qualifying post-stabilization services, but never for the non-waivable ancillary categories.

State rules may be broader than federal law. CMS maintains a Consumer Assistance Program directory that points people to state help, including a state Department of Insurance when appropriate. The right contact can also depend on whether an employer plan is fully insured or self-funded.

What should you do after receiving a surprise bill?

Use a four-step process that preserves records and avoids treating the largest printed number as the final answer.

1. Pause before paying more than the EOB says you owe

Do not ignore the bill or its due date. Instead, check whether your health plan has issued an explanation of benefits. The EOB is not a bill; it is the plan's statement of how the claim was processed and what it calculates as your responsibility.

CMS advises consumers to compare the provider bill with the EOB before paying. If the EOB has not arrived, call the plan and ask whether it received a claim. Ask the billing office how it will handle the due date while the discrepancy is reviewed. A phone call alone does not automatically stop billing or collection activity.

2. Ask for detail and compare the documents

Ask the provider or facility for the most detailed statement it can provide from its billing records. Do not frame this as a universal federal right to a newly created document. The practical goal is to see the service dates, descriptions, charges, payments, adjustments, and current patient balance.

Match the statement to every relevant EOB. One encounter can produce separate claims from a hospital, emergency clinician, imaging professional, laboratory, or ambulance provider. Compare each provider name and date rather than combining unrelated balances.

The guide to reading an EOB line by line explains allowed amounts, adjustments, deductible, coinsurance, and claim remarks. When the bill exceeds the EOB's patient-responsibility amount, record the exact difference.

3. Call the insurer and the billing provider

Ask the insurer:

• Was this claim processed as emergency care or another No Surprises Act-protected service?
• Was in-network cost sharing used?
• Is the provider or facility seeking an amount above the EOB responsibility?
• Does the plan need information or an internal appeal?
• Which deadline applies if the processing is disputed?

Then call the provider or facility. Give the claim reference and ask it to reconcile its balance with the EOB. Avoid sending unredacted documents through an unverified channel. Use the plan or provider's official secure process when supporting records are required.

If the insurer denied or incorrectly processed the claim, follow its written appeal procedure and deadline. How Do You Appeal a Health Insurance Denial in 2026? covers that separate process.

4. Contact the No Surprises Help Desk if needed

The federal No Surprises Help Desk can answer questions and help submit a complaint. Call 1-800-985-3059. As verified on October 16, 2026, CMS lists hours of 8 a.m. to 8 p.m. Eastern Time on weekdays and 10 a.m. to 6 p.m. Eastern Time on weekends, with language and accessibility support.

The Help Desk cannot act as legal counsel, give medical advice, or guarantee that a provider will reduce a charge. It can help determine whether the federal rules may apply and route a complaint. For a ground ambulance issue or an additional state protection, also check the CMS Consumer Assistance Program directory.

How would this work in a synthetic ER example?

Assume a fictional patient with private insurance visits an in-network emergency department. The hospital is in network, but an emergency clinician is out of network. The plan's EOB lists a combined $650 in deductible and coinsurance as the patient's responsibility. Later, the clinician sends a separate bill that would bring the patient's total to $1,250.

The $600 difference should not be paid automatically. The patient can confirm that the clinician's claim was submitted, ask the plan whether it applied federal emergency-service protections, and ask the clinician to match the bill to the EOB. If the difference remains, the patient can contact the Help Desk.

This example does not prove that any difference is unlawful. A second bill may correspond to a separate claim, the plan may have reprocessed a claim, or a document may be incomplete. The point is to reconcile the exact provider, service, and EOB before deciding what remains due.

What records should you keep?

Create a simple timeline with the date of service, each bill and EOB date, who you called, the number used, the representative's name or reference number, and what was promised. Save copies of notices, consent forms, appeal instructions, and secure messages.

Keep health and billing information private. You can use Medical Bill Reader to organize visible billing fields and questions to verify, but its output is educational and does not determine legal responsibility, coverage, or whether a bill violates the law. Redact or minimize information before sharing records anywhere that does not require the full document.

Sources

• CMS: Know your medical bill rights when using insurance
• CMS: Action plan for a surprise emergency-room bill
• CMS: No Surprises Act federal protection decision tree
• CMS: Get help with your medical bill
• CMS: Consumer Assistance Program directory
• U.S. Department of Labor: How the No Surprises Act can protect you