Weight-Loss Surgery: insurance and costs

Bills for surgery come from several places: the surgeon, the hospital or surgery center, anesthesia, imaging, therapy and equipment, often over months. This page shows a published reference price for weight-loss surgery, explains how insurance turns a price into what you owe, and lists the protections and questions that matter most. Your own plan and your surgical team decide the final number.

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What's specific to weight-loss surgery

No outpatient price. Sleeve gastrectomy and gastric bypass are usually done with a hospital admission, so Medicare's outpatient price lookup doesn't list them. If you have Medicare and are admitted, the Part A inpatient deductible applies.^[1][2]

Medicare's criteria. Medicare covers some bariatric operations if you meet conditions related to obesity.^[3] Its national coverage policy covers certain procedures for people with a BMI of 35 or more, at least one obesity-related condition, and previous unsuccessful medical treatment for obesity.^[4]

Private insurance. Plans vary. Some ask for supervised weight-loss visits, nutrition and psychological evaluations before approving surgery, which can take months. Ask for your plan's written medical policy for bariatric surgery.^[5] Medicare doesn't cover your travel to a bariatric surgery center.^[3]

How your plan turns a price into your bill

• Deductible: the amount you pay for covered care before your plan starts to pay.^[6]
• Coinsurance: your percentage share of the allowed amount after the deductible, for example 20%.^[7]
• Out-of-pocket maximum: the most you pay in a plan year for covered, in-network care. For 2026, Marketplace plans can't set it higher than $10,600 for one person or $21,200 for a family. Employer plans may set lower limits.^[8]

If you have Original Medicare

In 2026 the Part B deductible is $283 a year, and after that you usually pay 20% of the Medicare-approved amount for outpatient care. If you're formally admitted to a hospital, the Part A deductible is $1,736 per benefit period.^[2][9]

Whether you're an inpatient or an outpatient changes what you pay. You're an outpatient, even if you stay overnight, unless a doctor has written an order to admit you. Observation services are outpatient care.^[1] Ask your team which status you'll have. Medicare Advantage and supplemental (Medigap) plans have their own rules, so call your plan.^[10]

Protect yourself from surprise bills

Prior authorization isn't a promise to pay

Your plan may require approval before surgery. Preauthorization is a decision that a service is medically necessary, but it isn't a promise your plan will cover the cost.^[5] Ask your plan to confirm separately that the surgeon, the facility and anesthesia are in network, and what your share will be.

The No Surprises Act

If you have private insurance, the No Surprises Act protects you from unexpected out-of-network bills for non-emergency care related to a visit to an in-network hospital, hospital outpatient department or surgery center. For example, an out-of-network anesthesiologist at your in-network hospital.^[11]

You can lose that protection if you sign a notice and consent form agreeing to out-of-network care. The protections also don't apply in a doctor's office that isn't a hospital outpatient department, or at an out-of-network facility.^[11] Read anything you're asked to sign before surgery.

If you're paying yourself

If you don't have or don't use insurance, providers usually must give you a good faith estimate when you schedule care at least three business days ahead or ask for one. You may be able to dispute a bill that's at least $400 more than the estimate.^[12] Keep the estimate.

Look up prices and ask for help

Hospitals must post their prices online, including a list of common shoppable services, under federal price transparency rules.^[13] Tax-exempt hospitals must have a written financial assistance policy offering free or discounted care to patients who qualify.^[14] Ask the billing office for it before surgery, not just after the bill arrives.

Costs people forget

• Pre-surgery program visits and tests
• Lifelong vitamins and supplements, usually out of pocket
• Protein shakes and new clothes as you lose weight
• Travel if the program is far away

See recovery supplies at every budget and ask your team which items are supplied, rented or covered.

Time off work

Lost income is often the biggest cost that never shows up on a bill. The recovery section of the guide describes typical recovery. Under the Family and Medical Leave Act, eligible employees can take up to 12 workweeks of job-protected leave in a 12-month period for a serious health condition.^[15] Ask HR early about short-term disability, paid leave and keeping your health insurance while you're off.

Questions to ask before surgery

1. What procedure codes will you bill, and where will the surgery be done?
2. Is everyone involved in network, including anesthesia, the assistant surgeon and any device or implant charges?
3. Does my plan require prior authorization, and has it been approved for this setting?
4. Will I be an inpatient, an outpatient, or under observation?
5. What is my estimated share for the surgery, and what does it not include?
6. How much do therapy, equipment and follow-up visits cost me?
7. If I'm paying myself, can I have a written good faith estimate?
8. Do you have a financial assistance policy or payment plan?

This page explains how costs and coverage usually work. It isn't legal, tax or financial advice. Plans differ, so confirm details with your insurer and your surgical team. Figures checked November 2026.

Sources

1. Medicare.gov. Inpatient or outpatient hospital status affects your costs. www.medicare.gov
2. Medicare.gov. Medicare costs: Part A and Part B deductibles and coinsurance for 2026. www.medicare.gov
3. Medicare.gov. Bariatric surgery coverage. www.medicare.gov
4. Centers for Medicare & Medicaid Services. National Coverage Determination 100.1: Bariatric surgery for treatment of co-morbid conditions related to morbid obesity. www.cms.gov
5. HealthCare.gov. Preauthorization. www.healthcare.gov
6. HealthCare.gov. Deductible. www.healthcare.gov
7. HealthCare.gov. Coinsurance. www.healthcare.gov
8. HealthCare.gov. Out-of-pocket maximum/limit (2026 Marketplace limits). www.healthcare.gov
9. Centers for Medicare & Medicaid Services. 2026 Medicare Parts A & B premiums and deductibles (fact sheet, November 14, 2025). www.cms.gov
10. Medicare.gov. Surgical coverage: estimating your costs. www.medicare.gov
11. Centers for Medicare & Medicaid Services. Know your medical bill rights when using insurance (No Surprises Act). www.cms.gov
12. Centers for Medicare & Medicaid Services. Medical bill rights (good faith estimates if you don't use insurance). www.cms.gov
13. Centers for Medicare & Medicaid Services. Hospital price transparency: information for consumers. www.cms.gov
14. Internal Revenue Service. Financial assistance policies (FAPs) for tax-exempt hospitals. www.irs.gov
15. US Department of Labor. Family and Medical Leave Act. www.dol.gov