How to avoid surprise medical bills

Most surprise medical bills start before the care does. A doctor you never met turns out to be out-of-network. A test needed approval that nobody got. Or nobody told you the price.

The good news is that a few checks before planned care can prevent many of these bills. A quick check after care can catch problems before you pay. This guide walks through each step, plus your rights in an emergency.

What makes a medical bill a surprise?

A surprise bill usually means an unexpected bill from a provider outside your plan's network. That provider may bill you for the gap between its price and what your plan pays. This is called balance billing.

Since January 1, 2022, a federal law called the No Surprises Act has protected most people with health insurance in 3 situations:

• Emergency care, including at an out-of-network hospital
• Non-emergency care from out-of-network providers during a visit to an in-network hospital, hospital outpatient department or ambulatory surgical center
• Air ambulance rides

In these cases, you owe no more than your in-network share, called cost sharing. That's your deductible, copays and coinsurance.

The law has gaps, though. It doesn't cover ground ambulance rides. It usually doesn't cover care tied to a visit at a doctor's office or clinic. And it can't help if your plan doesn't cover the service at all. Our guide to whether the No Surprises Act applies to your bill goes deeper.

If you have Medicare, Medicaid, TRICARE or VA health care, the No Surprises Act doesn't apply to you. Those programs already protect you from some unexpected out-of-network bills. If you don't have insurance, the law gives you a different right: a written price estimate before scheduled care.

Which problem do you have?

Step 1: Check the network for the facility and every provider

Planned care often involves more providers than you meet. A surgery can bring separate bills from the facility, the surgeon, the anesthesiologist, a pathologist who checks tissue, and a lab. A scan can bring a second bill from the radiologist who reads it.

Check each one against your plan's network, not just the hospital. Ask your doctor's office who else will be involved and which lab they use. If any of them is out-of-network, ask for an in-network option.

This matters most outside hospitals. At an in-network hospital or surgery center, the No Surprises Act protects you from out-of-network anesthesia, radiology, pathology and lab bills. At a doctor's office, lab work sent to an out-of-network lab usually isn't protected. Our guides to out-of-network anesthesia and unexpected lab bills cover both.

Save proof as you go: screenshots of your plan's online directory and notes from each call. If your plan's directory wrongly listed a provider as in-network and you relied on it, you owe only in-network cost sharing. Our checklist on how to check if a doctor is in network covers each step.

Step 2: Confirm prior authorization

Your plan may need to approve some care before you get it. This is called prior authorization, preauthorization or precertification. It can apply to a service, a treatment plan, a prescription drug or medical equipment.

Ask your doctor's office whether your plan needs approval and who will request it. Then call your plan to confirm it's approved. Write down the date, the name of the person you spoke with, and any reference number.

Approval isn't a promise that your plan will pay. But skipping a required approval can lead to a denied claim. If your plan says no, see prior authorization denied: what to do next.

Emergencies are different. Your plan can't require approval before you get emergency care.

Step 3: Get a price estimate before you go

How you get an estimate depends on whether you'll use insurance.

If you'll use insurance, start with your insurer's online cost estimator. Most health plans must offer one. It shows the rate your plan negotiated with a provider and your estimated share. Since January 1, 2024, it must include all covered items and services. You can also ask for the same information on paper.

To use it, search by the name of the procedure or its billing code. Your doctor's office can give you the code. Then pick the exact provider and location, since prices can differ from 1 place to the next.

The No Surprises Act also calls for an advanced explanation of benefits. That's a cost estimate your plan would send before scheduled care. As of September 2026, federal agencies haven't issued the rules to put it in place. So don't wait for one. Use the estimator, or call your plan and ask.

If you're uninsured or paying yourself, providers must give you a good faith estimate. You get one when you schedule care at least 3 business days ahead, or when you ask. For now, each estimate usually covers only 1 provider or facility, so ask each provider for its own.

If a provider's bill comes in $400 or more above its estimate, you can dispute it. You need to start within 120 days of getting the first bill. Our guide to good faith estimates and the $400 dispute rule explains how.

An estimate can't include care nobody expected. So ask what might be added if plans change during your visit.

Step 4: Compare prices when you have a choice

If you can choose where to get a test or procedure, compare prices first. Hospitals must post their standard charges online. They must also offer a price estimator or a plain-language list of at least 300 services you can schedule ahead.

Look for a link called "Price Transparency" at the bottom of the hospital's website. Posted prices are a starting point, not your final bill. They don't reflect your deductible or other details of your plan.

Our guide on hospital price transparency lookup shows how to read the numbers. It also explains how to use them when you negotiate or question a bill.

Step 5: Ask about discounts and financial help

If you're uninsured or have a high deductible, ask about lower prices before care, not after. Some providers offer a lower price if you pay yourself or pay quickly. Ask about payment plans, too.

Tax-exempt (nonprofit) hospitals must have a written financial assistance policy. It explains who qualifies for free or discounted care and how to apply. The hospital must post it on its website, along with a plain-language summary.

Our guides to self-pay discounts and hospital charity care explain how to ask. Our charity care screener shows where your income falls against federal poverty guidelines.

Step 6: Read any form before you sign it

Before non-emergency care, an out-of-network provider may ask you to sign a form that gives up your No Surprises Act protections. If you sign it, you'll likely pay more. You can choose not to sign, but the provider may then decline to treat you.

Some providers can never ask you to sign this form. They include emergency doctors, anesthesiologists, radiologists, pathologists, assistant surgeons, hospitalists and intensivists. If one of them hands you the form, you don't have to sign it.

If you're asked to sign before surgery, ask whether an in-network provider can do the same care instead.

Questions to ask before planned care

Call the provider's office a week or 2 before your visit. Have your insurance card in hand, and ask:

1. Which facility will I go to, and is it in-network with my plan?
2. Who else will be part of my care, such as anesthesia, radiology, pathology or a lab?
3. Are they all in-network with my plan? Give the plan's exact name from your card.
4. Does my plan need to approve this care, and has it been approved?
5. What are the billing codes, so I can look up my cost?
6. What will I likely owe, and what could be added if plans change?
7. If I'm paying myself, what's the cash price, and can I get a good faith estimate?

Write down each answer, the date, and the name of the person who gave it.

Keep a paper trail

Make 1 folder, on paper or on your phone, for each planned procedure or hospital stay. Keep these in it:

• Screenshots of directory listings, with the date you took them
• Notes from each call, with names and any reference numbers
• Prior authorization approvals
• Price estimates and good faith estimates
• Each bill, with the explanation of benefits (EOB) from your plan

This record helps if a bill is wrong. It's also your proof if your plan's directory listed a provider by mistake.

If you're handling care for a parent or partner, the same steps apply. Ask their plan what it needs from you before it can talk with you about their account. Our guide to help with an elderly parent's medical bills has more.

What preventive care is free?

Most health plans must cover a set of preventive services at no cost to you. That's true even before you meet your deductible, as long as you use an in-network provider. Examples include blood pressure screening, colorectal cancer screening for adults 45 to 75, depression screening, and vaccines.

A few habits help keep it free:

• Use an in-network provider, and ask that lab work go to an in-network lab.
• When you book, say the visit is a preventive checkup or screening.
• If your doctor orders an extra test, ask whether it's billed as preventive.

Coverage can vary, so $0 isn't certain in every case. If a checkup or screening shows up as a charge, see preventive care billed as diagnostic. For colonoscopies, see our guide to a screening colonoscopy billed as diagnostic.

Choose a plan that fits the care you expect

Open enrollment is your yearly chance to avoid big bills before they start. A plan with a low monthly premium can cost more over a year if you need a lot of care.

Before you pick, add up the premiums and what you'd likely pay for care. Check that your doctors, hospitals and prescriptions are covered in-network. Then look at the out-of-pocket maximum, the most you'd pay for covered in-network care in a year. Our guide on how to choose a health insurance plan walks through it with an example.

What if it's an emergency?

Get care first. If your plan covers emergency care, you can't be charged more than your in-network cost sharing for emergency services. That's true even at an out-of-network hospital, and your plan can't require approval first.

Once you're stable, you may be asked to sign a consent form for more care from out-of-network providers. Read it carefully. You can ask whether you can move to an in-network hospital instead.

Ambulances are the big gap. Ground ambulance rides aren't covered by the No Surprises Act, though some states have their own rules. Air ambulance rides are covered. Our guides to emergency room bills and ambulance bills explain what to check.

Planning surgery, a birth or a scan?

Big planned care is where the routine above pays off most. Our care guides list the bills you're likely to get and what to check before and after:

• Bills after surgery
• Hospital bills after having a baby
• MRI and CT scan bills

Here's how the routine can look for a planned surgery.

Say Maya's surgeon schedules her knee surgery at a surgery center. She has $1,000 left on her deductible. After that, she pays 20% coinsurance. She has $3,500 left before she reaches her out-of-pocket maximum.

She checks every provider and looks up each allowed amount in her insurer's cost estimator.

Provider	In-network?	How she checked	Estimated allowed amount
Surgery center	Yes	Online directory and a call to her plan	$4,200
Surgeon	Yes	Online directory and a call to the office	$1,500
Anesthesia group	Yes	Asked the center for the group's name, then called her plan	$600
Pathology lab	Yes	Asked the surgeon's office which lab it uses	$100
Total			$6,400

Her plan requires prior authorization. The surgeon's office requested it. Maya called her plan, confirmed it was approved, and wrote down the reference number.

Here's her estimated share:

• Deductible: $1,000
• Coinsurance: 20% of the remaining $5,400, which is $1,080
• Total: $1,000 + $1,080 = $2,080

That's under the $3,500 she has left before her out-of-pocket maximum. So she can plan for about $2,080. She saves her screenshots and call notes in 1 folder with the estimate.

After your care: check the EOB before you pay

Your plan will send an EOB for each claim. It shows what the provider charged, what your plan paid, and what you may owe. Wait for it before you pay a bill, if you can.

Then compare each bill with its EOB. If a bill asks for more than your share on the EOB, call the billing office and ask why. Our guide to comparing your medical bill vs. EOB shows how, 1 number at a time. Our medical bill checklist keeps the steps in 1 place.

If a bill shows only a total, ask for an itemized bill. It lists every charge, 1 line at a time, so you can match it to your estimate. See how to get an itemized bill.

If an out-of-network bill looks like one the law should have stopped, try our No Surprises Act check. It asks a few questions about your bill. If the answer is yes, our surprise bill dispute letter gives you the words to push back.

When to get help

You can handle most of these steps yourself with a few calls. It's worth getting help when:

• A provider or your plan won't fix a bill that looks like a surprise bill.
• You're facing a large planned cost and can't get a clear estimate.
• A bill is already in collections, or you're getting collection calls.
• You're managing care and bills for someone else and you're short on time.

Start with your insurer's member services team. The number is on your insurance card. For surprise bills, the federal No Surprises Help Desk answers questions at 1-800-985-3059. You can also submit a complaint if you think a provider isn't following the law.

Your state insurance department or consumer assistance program can also help with surprise billing questions. A medical bill advocate can make the calls for you. If a bill is large and a provider threatens legal action, talk with an attorney.

If a bill is correct but more than you can pay, you still have options. See what to do if you can't afford a medical bill.