Does Insurance Cover Weight Loss Surgery?

On this page

• Marketplace and job-based plans
• The medical criteria
• What your insurer will ask for
• Medicare and Medicaid
• What it costs if you pay yourself
• Where GLP-1 drugs fit in
• If your insurer says no
• Frequently asked questions

Marketplace and job-based plans

Marketplace plans have to cover the essential health benefits, and each state defines those through its own benchmark plan. If your state’s benchmark includes bariatric surgery, Marketplace plans there generally cover it. If it doesn’t, insurers don’t have to. See what the essential health benefits are.

By the most recent counts, fewer than half of states include it. A 2022 Urban Institute review counted 23 state benchmark plans that cover bariatric surgery, and the American Society for Metabolic and Bariatric Surgery (ASMBS) says more than half of states cover neither bariatric surgery nor weight-loss programs, based on maps it last updated in June 2023. California’s benchmark is one that covers it. Before you enroll, search each plan’s Summary of Benefits and Coverage and plan documents for “bariatric” or “obesity surgery.”

Job-based plans are different. The benchmark rules apply to individual and small-group plans, so large employers’ plans and self-funded plans don’t have to follow them. UnitedHealthcare’s policy notes that most benefit plans exclude bariatric surgery, and Aetna’s says some of its plans exclude it entirely, so check your benefits booklet or ask HR. See what type of health insurance covers surgery.

The medical criteria

Even when a plan covers the surgery, you have to meet its criteria. Here’s how the main standards compare:

Standard	BMI threshold
1991 NIH consensus	40 or higher, or 35 or higher with an obesity-related condition
2022 ASMBS and IFSO guidelines	35 or higher regardless of other conditions; consider at 30 to 34.9 with metabolic disease; lower cutoffs for Asian patients
Medicare	35 or higher, plus at least one obesity-related condition and earlier medical treatment that didn’t work
Aetna and UnitedHealthcare (2026 policies)	40 or higher, or 35 or higher with a listed condition; 37.5 and 32.5 for people of Asian descent

The 2022 guidelines also say there’s no upper age limit. Still, insurers such as Aetna and UnitedHealthcare apply the older NIH thresholds, so a BMI between 35 and 40 without a listed condition, such as type 2 diabetes or sleep apnea, may not be enough for approval.

What your insurer will ask for

Expect paperwork. Common requirements include:

• A behavioral health evaluation. Aetna requires one, UnitedHealthcare requires one unless you complete a multidisciplinary surgical preparation program, and ASMBS says patients are required to have a mental health screening before surgery.
• Your weight history. Plans want records of your weight, past attempts to lose it, and your eating and activity habits. Aetna’s policy uses your BMI from before your preoperative program starts.
• A diet or lifestyle program. ASMBS says some insurers require a physician-monitored diet for three to six months. Aetna requires at least 12 sessions of a nutrition, activity and behavior program within the two years before surgery. The 2022 guidelines say there are no data to support insurer-mandated weight loss before surgery.
• An accredited center. Some insurers require surgery at a center that meets ASMBS-backed quality standards.
• Approval in advance. Bariatric practices usually have staff who handle insurance and can request prior authorization for you.

Medicare and Medicaid

Medicare Part B covers bariatric surgery if your BMI is 35 or higher, you have at least one obesity-related condition and you’ve tried medical treatment for obesity without success. Covered procedures include gastric bypass, the duodenal switch and laparoscopic adjustable banding, and Medicare’s regional contractors decide whether to cover a sleeve gastrectomy. Medicare doesn’t cover treatment for obesity alone, or gastric balloons. If you’re admitted to the hospital, the Part A deductible applies ($1,736 in 2026), and the Part B deductible ($283) applies to doctor and outpatient care. If you have a Medicare Advantage plan, check its rules and network with the plan.

Medicaid covers bariatric surgery in nearly every state, but usually with limits. The STOP Obesity Alliance at George Washington University reviewed 2023 Medicaid coverage and found 49 of 51 programs covered it in some form, only 4 covered it without limits or restrictions, and 2 didn’t cover it. It also found many restrictions didn’t match clinical guidelines. Ask your state Medicaid agency or Medicaid health plan for its criteria.

What it costs if you pay yourself

There’s no reliable national figure for what hospitals charge self-pay patients for bariatric surgery, so be careful with any single number you see online. To get a real price:

• Look up the hospital’s posted prices. Since 2021, hospitals have had to post pricing information online, including a consumer-friendly list of shoppable services.
• Ask the hospital and surgeon for a written self-pay quote and a Good Faith Estimate. If the final bill comes in $400 or more above the estimate, you may be able to dispute it.
• Ask nonprofit hospitals for their financial assistance policy.
• If you itemize, the IRS lets you count weight-loss costs that treat a disease a doctor has diagnosed, such as obesity, as medical expenses. Only the part of your total medical costs above 7.5% of your adjusted gross income is deductible. See whether health insurance is tax deductible.

Where GLP-1 drugs fit in

Weight-loss drugs such as Wegovy and Zepbound are another option for some people, and coverage for them is uneven too. Among employers with 200 or more workers, 18% covered GLP-1s for weight loss in 2026, about the same as in 2025, according to KFF. Medicare Part D can’t cover drugs used only for weight loss, but Medicare’s temporary GLP-1 Bridge, which started July 1, 2026, has a $50 monthly copay for Wegovy, Zepbound KwikPen or Foundayo for adults who meet its criteria, such as a BMI of 35 or higher. People with type 2 diabetes, moderate-to-severe sleep apnea or fatty liver disease aren’t eligible for the Bridge, though Part D may cover the drugs for those conditions. Bridge approvals are valid through December 31, 2027. See does insurance cover Wegovy, Zepbound or Ozempic.

If your insurer says no

Ask for the denial in writing, along with the specific criteria the plan says you didn’t meet, and work with your surgeon’s office to fill any gaps in your records. With a job-based or Marketplace plan, you have at least 180 days to file an internal appeal. For care you haven’t had yet, the plan generally has 30 days to decide, or 72 hours if it’s urgent. If it still says no, you can ask for an external review within four months, and the insurer has to accept the reviewer’s decision. Medicare and Medicaid have their own appeal steps. ASMBS points patients to a free Obesity Action Coalition guide with sample appeal letters. Fewer than 1% of denied in-network claims on HealthCare.gov plans were appealed in 2024, according to KFF. See how to appeal a claim denial.

Shopping for a 2027 plan that covers bariatric surgery? Compare quotes by ZIP code, then check each plan’s benefits before you enroll.

Frequently asked questions

Does Obamacare cover weight loss surgery?

In some states. Marketplace plans follow your state’s benchmark plan, and about 23 states included bariatric surgery in a 2022 count. Where it’s covered, you still have to meet the plan’s medical criteria.

What BMI do you need for insurance to cover bariatric surgery?

Many private insurers want a BMI of 40 or higher, or 35 or higher with a condition such as type 2 diabetes or sleep apnea. Medicare requires 35 or higher plus at least one obesity-related condition and earlier medical treatment that didn’t work. Meeting a BMI cutoff doesn’t guarantee approval.

Does Medicare cover gastric sleeve surgery?

It can. Medicare’s national rule leaves sleeve gastrectomy to its regional contractors, using the same criteria as other bariatric procedures: a BMI of 35 or more, an obesity-related condition and unsuccessful medical treatment.

Is weight loss surgery tax deductible?

It can be, if it treats a disease a doctor diagnosed, such as obesity, and you itemize. Only medical costs above 7.5% of your adjusted gross income count.

This article is general information, not medical, insurance or tax advice. Coverage and criteria depend on your state, your plan and your insurer’s current policy. Last reviewed October 2026.