肥満手術（胃バイパス）の費用はいくら？
Gastric bypass is a weight-loss surgery that creates a small pouch from the stomach and connects it directly to the small intestine. It limits food intake and reduces nutrient absorption, helping patients with severe obesity achieve significant weight loss.
保険なし
$25,000
保険あり
$5,000
メディケア
$0
全国平均
$10,000
By Elena Bellini, MPH, Health Policy & Management · Last reviewed 2026-04-21 ·
Sources: CMS Medicare Provider Utilization and Payment Data 2025 · Methodology · Editorial standards 概要
Bariatric surgery is a set of weight-loss operations that restrict food intake, alter digestion, or both. The most common current procedures are laparoscopic sleeve gastrectomy (removes a large portion of the stomach), Roux-en-Y gastric bypass (creates a small gastric pouch and reroutes the small intestine), and adjustable gastric banding (now less common). Most procedures are performed laparoscopically or robotically under general anesthesia; the operation itself takes 1 to 3 hours, with a typical inpatient stay of 1 to 2 nights. Commercial and Medicare coverage is common but gated by eligibility criteria (BMI thresholds and comorbidities, documented prior weight-loss efforts, psychological and nutritional evaluations, supervised medical weight management programs, and non-smoking status for a defined period). These pre-surgical requirements are themselves a multi-month process. Most centers are Centers of Excellence or MBSAQIP-accredited, and choosing one is both a quality and cost consideration. Lifelong vitamin supplementation and follow-up are part of the post-op plan.
費用に影響する要素
- Procedure type: sleeve gastrectomy, Roux-en-Y bypass, and revision surgeries have different complexity and fees; revisions typically cost more than primary operations.
- Surgical platform: robotic-assisted bariatric procedures add an equipment fee compared to standard laparoscopic.
- Site of service: ambulatory bariatric programs for select patients cost less than inpatient stays; hospital-based inpatient surgery is the norm.
- Length of stay: most patients stay 1-2 nights; complications or comorbidities can extend the stay and the bill.
- Pre-operative program costs: mandatory nutrition visits, psychological evaluation, and medical weight-loss supervision add cost over several months.
- Center-of-excellence status: accredited centers may negotiate better insurance rates but also have their own program fees.
節約方法
- Confirm eligibility criteria with your insurer in writing before starting the pre-op program; coverage denials after months of prep are devastating.
- Check whether your employer offers a bariatric center-of-excellence program with travel support — these often waive copays and deductibles.
- Ask whether your program's pre-op visits (nutrition, psych, medical weight management) are covered as medical visits or packaged as program fees.
- Verify the surgeon, surgical assistant, anesthesiologist, and facility are all in-network.
- Schedule surgery after the deductible is met to maximize insurance coverage.
- Medical-tourism bariatric options exist abroad at dramatically lower prices but carry follow-up and complication-care risks worth weighing carefully.
保険とカバレッジに関する注意事項
Medicare covers bariatric surgery for patients meeting BMI and comorbidity criteria at approved facilities. Commercial plans commonly cover bariatric surgery but almost always require prior authorization plus documentation of BMI (usually 40+, or 35+ with qualifying comorbidities), a supervised medical weight-management program (often 3-6 months), psychological evaluation, and nutrition counseling. Some self-funded employer plans exclude bariatric surgery entirely — always check your specific plan document. Medicaid coverage varies by state. Expect to meet your deductible plus coinsurance. Post-operative follow-up visits, vitamin supplements, and any plastic surgery for excess skin are handled under different benefit rules.
Data sources for this page
Cost figures on this page are compiled from the following sources, triangulated per the rules in our methodology:
- CMS Medicare Provider Utilization and Payment Data 2025 — primary CMS reference used as the Medicare-rate anchor.
- Hospital Price Transparency machine-readable files (HPT MRFs) from a sample of major hospitals in each state, per the federal Hospital Price Transparency rule.
- Transparency in Coverage payer in-network rate files for commercial-rate cross-validation.
- State All-Payer Claims Database (APCD) summaries where published (Colorado, New Hampshire, Massachusetts, Minnesota, Maine, Utah, Vermont, Rhode Island, Washington, Oregon).
Last reviewed 2026-04-21. See editorial standards for our fact-checking process and correction policy.
Range: $18,000 to $34,500 · 50 states shown
州別費用
| 州 | 保険なし | 保険あり | メディケア |
|---|---|---|---|
| Mississippi | $18,000 | $3,600 | $0 |
| Arkansas | $18,800 | $3,750 | $0 |
| West Virginia | $18,800 | $3,750 | $0 |
| Alabama | $19,500 | $3,900 | $0 |
| Oklahoma | $19,500 | $3,900 | $0 |
| Kentucky | $21,300 | $4,250 | $0 |
| Louisiana | $21,500 | $4,300 | $0 |
| Iowa | $22,000 | $4,400 | $0 |
| New Mexico | $22,000 | $4,400 | $0 |
| South Carolina | $22,000 | $4,400 | $0 |
| South Dakota | $22,000 | $4,400 | $0 |
| Kansas | $22,300 | $4,450 | $0 |
| North Dakota | $22,300 | $4,450 | $0 |
| Idaho | $22,500 | $4,500 | $0 |
| Nebraska | $22,500 | $4,500 | $0 |
| Tennessee | $22,500 | $4,500 | $0 |
| Indiana | $23,300 | $4,650 | $0 |
| Missouri | $23,300 | $4,650 | $0 |
| Utah | $23,300 | $4,650 | $0 |
| Wyoming | $23,300 | $4,650 | $0 |
| Georgia | $23,500 | $4,700 | $0 |
| North Carolina | $23,500 | $4,700 | $0 |
| Michigan | $23,800 | $4,750 | $0 |
| Montana | $23,800 | $4,750 | $0 |
| Arizona | $24,500 | $4,900 | $0 |
| Ohio | $24,500 | $4,900 | $0 |
| Wisconsin | $24,500 | $4,900 | $0 |
| Maine | $24,800 | $4,950 | $0 |
| Texas | $24,800 | $4,950 | $0 |
| Florida | $25,300 | $5,050 | $0 |
| Minnesota | $25,300 | $5,050 | $0 |
| Illinois | $25,800 | $5,150 | $0 |
| Pennsylvania | $25,800 | $5,150 | $0 |
| Delaware | $26,000 | $5,200 | $0 |
| Nevada | $26,000 | $5,200 | $0 |
| Vermont | $26,000 | $5,200 | $0 |
| Virginia | $26,000 | $5,200 | $0 |
| Colorado | $26,500 | $5,300 | $0 |
| New Hampshire | $26,500 | $5,300 | $0 |
| Oregon | $26,500 | $5,300 | $0 |
| Maryland | $27,500 | $5,500 | $0 |
| Rhode Island | $27,800 | $5,550 | $0 |
| Washington | $27,800 | $5,550 | $0 |
| Connecticut | $30,000 | $6,000 | $0 |
| New Jersey | $30,000 | $6,000 | $0 |
| California | $33,000 | $6,600 | $0 |
| Massachusetts | $33,300 | $6,650 | $0 |
| Alaska | $33,800 | $6,750 | $0 |
| New York | $33,800 | $6,750 | $0 |
| Hawaii | $34,500 | $6,900 | $0 |
よくある質問
保険なしで肥満手術（胃バイパス）はいくらかかりますか？
米国での肥満手術（胃バイパス）の保険なし平均費用は$25,000です。州によって費用は大きく異なります。
保険は肥満手術（胃バイパス）をカバーしますか？
ほとんどの医療保険は、医学的に必要な場合に肥満手術（胃バイパス）をカバーします。保険適用時の平均自己負担額は$5,000です。
メディケアは肥満手術（胃バイパス）をカバーしますか？
メディケアパートBは通常、医師の処方がある場合に肥満手術（胃バイパス）をカバーします。メディケア承認の平均額は$0です。
Elena Bellini による確認 · 最終確認日：2026-04-21
データ出典：CMS Medicare Provider Utilization and Payment Data 2025。最終更新：2026-03-01。この情報は教育目的のみであり、医療アドバイスではありません。 本ウェブサイトは情報提供のみを目的としており、医療アドバイスではありません。必ず資格のある医療専門家にご相談ください。