You scheduled surgery at an in-network hospital. You confirmed your surgeon was in-network. Then two months later a bill lands from an anesthesiologist or radiologist you never chose, charging you out-of-network rates. This scenario happens millions of times a year in the United States, but as of 2026 federal law gives you strong rights to fight it, and in most cases you can get the bill reduced to your in-network cost-sharing amount or eliminated entirely.
Quick Answer: Under the No Surprises Act (effective 2022), out-of-network anesthesiologists and radiologists who treat you at an in-network facility cannot balance-bill you. You owe only your in-network cost-sharing (deductible, copay, coinsurance). If you received a larger bill, you can dispute it through your insurer, file a federal complaint, or use the free CoveredUSA Bill Analyzer to identify the specific overcharges on your itemized statement.
What Makes Anesthesiology and Radiology Bills Different
Anesthesiology and radiology are the two specialties most commonly involved in surprise billing disputes. Unlike your surgeon or primary doctor, you typically have no say in which anesthesiologist puts you under or which radiologist reads your imaging. Hospitals staff these roles independently, and those providers often participate in different insurance networks than the facility itself.
Before 2022, this gap meant patients could face five-figure balance bills for services they had no choice in selecting. The No Surprises Act, which took effect January 1, 2022, closed that gap. According to CMS.gov, the law explicitly names anesthesia and radiology as protected service categories alongside emergency medicine, pathology, laboratory, neonatology, assistant surgeons, hospitalists, and intensivists.
Your Rights Under the No Surprises Act in 2026
The core rule is straightforward: when you receive care at an in-network hospital, ambulatory surgical center, or emergency facility, the following providers cannot balance-bill you even if they are out-of-network:
- Anesthesiologists and CRNAs
- Radiologists and radiology groups
- Pathologists
- Emergency physicians
- Hospitalists and intensivists
- Neonatologists
- Assistant surgeons
"Balance billing" means charging you the difference between what your insurer pays and what the provider wanted to charge. That practice is now federally banned for these specialties in these settings.
What you do owe is your normal in-network cost-sharing. If your plan has a $500 deductible and a 20% coinsurance, you pay those amounts as if the anesthesiologist were in-network. That is it. The out-of-network provider and your insurer work out the rest between themselves.
The Consumer Financial Protection Bureau confirms: providers subject to these rules cannot ask you to waive your protections. If anyone presents you with a form to sign away your balance-billing rights for a non-emergency procedure at an in-network facility, that form is not legally enforceable for these specific specialties.
How to Check Your Bill Before Paying Anything
Before you dispute anything, request the itemized bill. This is a line-by-line breakdown of every charge, CPT code, and amount. Hospitals and providers are required to give you one. Your Explanation of Benefits (EOB) from your insurer will show what was billed, what the insurer paid, and what remains your responsibility.
The CoveredUSA Bill Analyzer is a free tool that compares each line on your itemized bill against the Medicare rate and flags charges that appear inflated, duplicate, or incorrectly coded. Common errors in anesthesiology and radiology bills include:
- Wrong time units: Anesthesia is billed in time units (typically one unit per 15 minutes). Extra units added incorrectly inflate the total.
- Unbundled codes: Radiology groups sometimes bill separately for components already included in a bundled procedure code (CPT codes 70010-79999).
- Wrong modifiers: Misapplied billing modifiers (like using AA instead of QK for medical direction cases) can double the stated charge.
- Duplicate line items: The same service billed twice under slightly different codes.
Upload your hospital bill to the free CoveredUSA Bill Analyzer to find errors, overcharges, and charity care options in 30 seconds.
Step-by-Step: How to Dispute an Out-of-Network Anesthesiology or Radiology Bill
The dispute process has multiple tracks depending on your situation. Work through these steps in order.
Step 1: Confirm the Bill Violates the No Surprises Act
The law protects you when ALL of the following are true:
- You have insurance (employer plan, ACA marketplace, or individual market plan)
- The facility where you received care was in-network with your plan
- The out-of-network provider delivered one of the protected service types (anesthesia, radiology, etc.)
- This was not a situation where you voluntarily chose an out-of-network provider and signed a valid consent notice
If all four apply, proceed to the dispute process. If you are uninsured or self-pay, a different track applies (covered in the FAQ below).
Step 2: Contact Your Insurance Company
Call the member services number on your insurance card and tell them you received a bill from an out-of-network anesthesiologist or radiologist for services at an in-network facility. Ask them to:
- Confirm your in-network cost-sharing amount for those services
- Reprocess the claim applying in-network rates
- Send the provider a notice of their obligations under the No Surprises Act
Get the representative's name, the call reference number, and a written confirmation if possible. Most legitimate balance-billing disputes get resolved here.
Step 3: Contact the Provider's Billing Department
Call the billing department of the anesthesiology or radiology group directly. Reference the No Surprises Act. Provide your in-network facility name and date of service. Ask them to resubmit to your insurer using the correct in-network rate framework.
Many out-of-network billing errors at this stage are administrative, not intentional. Billing groups sometimes fail to process the No Surprises Act flag correctly on the claim, and a phone call resolves it.
Step 4: File a Federal Complaint with CMS
If the provider refuses to adjust the bill, file a complaint with the CMS No Surprises Help Desk:
- Phone: 1-800-985-3059 (8 am to 8 pm ET, 7 days a week)
- Online portal: cms.gov/medical-bill-rights/help/submit-a-complaint
CMS can investigate the complaint and take enforcement action against providers violating the law. This step creates a formal federal record and often prompts rapid resolution because providers face significant penalties for No Surprises Act violations.
Step 5: Use Your State's External Review or Complaint Process
Many states have their own surprise billing protections that go further than the federal law. State insurance departments can mediate disputes. Contact your state insurance commissioner's office or your state's Consumer Assistance Program. The Department of Labor maintains a directory of these resources.
Step 6: Internal Insurance Appeal, Then External Review
If your insurer is not applying in-network rates correctly, file a formal internal appeal with your insurance company in writing. If the internal appeal fails, request an external review by an independent organization. External review decisions are binding on the insurance company.
Step 7: Patient-Provider Dispute Resolution (Uninsured or Self-Pay Only)
If you are uninsured or self-pay and received a bill that is $400 or more above the Good Faith Estimate the provider gave you before treatment, you can file through the Patient-Provider Dispute Resolution (PPDR) process:
- File within 120 calendar days of receiving the bill
- Pay the $25 administrative fee
- Submit through cms.gov/nosurprises or call 1-800-985-3059
- A third-party reviewer issues a binding decision within roughly 30 business days
Common Reasons Disputes Get Denied (and How to Avoid Them)
- You signed a consent form voluntarily waiving protections. For non-emergency scheduled procedures, out-of-network providers can ask you to consent to out-of-network charges. If you signed this, the No Surprises Act does not apply. Always read before you sign.
- The facility itself was out-of-network. The law only applies when the facility is in-network. If you went to an out-of-network hospital, the ancillary providers are also not protected.
- The dispute was filed too late. File complaints and appeals promptly. Waiting months can complicate the process.
- Incomplete documentation. Submit your EOB, the itemized bill, proof of the facility's in-network status, and any correspondence with the provider.
What to Do If a Provider Sends Your Bill to Collections
The No Surprises Act does not stop providers from initiating debt collection on disputed amounts. If your account goes to collections while you are actively disputing, send the collection agency a written dispute letter referencing the No Surprises Act and your pending complaint with CMS. Document all communications. A disputed bill cannot be reported to credit bureaus under the Fair Debt Collection Practices Act while the dispute is active, and as of 2025, medical debt under $500 is excluded from credit reporting entirely.
How the CoveredUSA Bill Analyzer Helps
Even when a bill is technically legal, anesthesiology and radiology bills frequently contain coding errors, duplicate charges, and inflated time units that have nothing to do with the No Surprises Act. The CoveredUSA Bill Analyzer checks your itemized statement line by line against Medicare reference rates, identifies charges that look anomalous, and surfaces whether you may qualify for hospital charity care programs that could zero out your remaining balance entirely.
Upload your hospital bill to the free CoveredUSA Bill Analyzer to find errors, overcharges, and charity care options in 30 seconds.
Frequently Asked Questions
Does the No Surprises Act protect me if my anesthesiologist is out of network?
Yes, in most cases. If you had surgery or a procedure at an in-network hospital or ambulatory surgical center, and you did not voluntarily consent in writing to out-of-network anesthesia charges, the No Surprises Act limits what the anesthesiologist can bill you to your in-network cost-sharing amount. You cannot be balance-billed for the remainder as of 2026.
Can a radiologist balance-bill me for reading an in-network hospital scan?
No. Radiology is explicitly listed as a protected specialty under the No Surprises Act. If a radiologist at an in-network facility reads your MRI, CT, X-ray, or other imaging and is out of network, they can only collect your in-network cost-sharing from you. The rest is between them and your insurer.
What if I never met the anesthesiologist, can they still bill me?
Yes, they can bill your insurance, but they cannot bill you more than your in-network cost-sharing amount. You never meeting or choosing the provider is actually central to why the law was written. These "invisible" providers are exactly who the No Surprises Act targets.
How long does the dispute process take?
Insurer reprocessing typically takes 30 to 60 days. A CMS complaint investigation varies but usually produces movement within 30 to 90 days. The PPDR process for uninsured patients has a statutory 30-business-day timeline for the reviewer's decision.
What if my employer's self-funded health plan is involved?
Most employer-sponsored plans, including self-funded plans, are covered by the No Surprises Act. The Department of Labor enforces the law for employer plans. File your complaint with DOL's Employee Benefits Security Administration (EBSA) if your insurer is not complying.
Can the hospital where I was treated help me dispute the anesthesiologist bill?
Hospitals are increasingly motivated to help because the No Surprises Act puts some responsibility on facilities to ensure their contractors comply. Call the hospital's patient advocate or financial counseling department and explain the situation. They can sometimes contact the anesthesiology or radiology group directly to resolve the billing issue faster.
What if my bill has actual coding errors, not just network issues?
Coding errors are separate from No Surprises Act violations and require a different process. Request your itemized bill and your EOB, then compare each line item. File a billing dispute directly with the provider's billing department citing the specific incorrect code or duplicate charge. Tools like the CoveredUSA Bill Analyzer can flag these automatically by comparing your charges against standard Medicare rates for the same procedure.
Does the No Surprises Act apply to Medicare or Medicaid patients?
The federal No Surprises Act primarily applies to private insurance plans (employer plans, ACA marketplace plans, individual market plans). Medicare and Medicaid have separate rules, but those programs already pay providers at fixed rates that generally prevent balance billing for covered services. If you have Medicare or Medicaid and receive an unexpected bill from an anesthesiologist or radiologist, contact the program directly: medicare.gov or your state Medicaid office.
