Medicare Coverage for Weight Loss Surgery: Everything You Need to Know

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Medicare Part A, also known as hospital insurance, generally covers inpatient hospital stays and certain follow-up care related to weight loss surgery. This includes pre-operative tests, surgical procedures, hospital stays, and post-operative care as deemed medically necessary. Medicare Part B, on the other hand, covers outpatient services, such as doctor visits, consultations, and diagnostic tests. However, it’s important to note that Part B coverage may vary depending on the specific circumstances and requirements set forth by Medicare.

2. Qualifying Criteria for Medicare Coverage

To qualify for Medicare coverage for weight loss surgery, certain criteria must be met. Medicare typically requires that individuals have a body mass index (BMI) of 35 or higher, along with at least one obesity-related health condition, such as diabetes, hypertension, or sleep apnea. Additionally, documentation from a qualified healthcare professional is necessary to establish the medical necessity of weight loss surgery for each individual case.

3. Approved Procedures

Medicare covers several weight loss surgery procedures that have been deemed effective and medically necessary. These include:

  • Gastric Bypass Surgery: This procedure involves dividing the stomach into a smaller upper pouch and a larger lower pouch, followed by rerouting the small intestine to connect to both pouches, resulting in reduced food intake and nutrient absorption.
  • Gastric Sleeve Surgery: Also known as sleeve gastrectomy, this procedure involves the removal of a portion of the stomach to create a smaller, sleeve-shaped stomach, which restricts food intake and promotes weight loss.
  • Laparoscopic Adjustable Gastric Banding: This procedure involves placing an adjustable band around the upper part of the stomach, creating a smaller pouch and restricting food intake.
  • Biliopancreatic Diversion with Duodenal Switch: This complex procedure involves removing a large portion of the stomach and rerouting the small intestine to limit food intake and nutrient absorption.

4. Medicare Requirements and Documentation

To ensure coverage for weight loss surgery, Medicare typically requires the following documentation:

  • A detailed history of prior weight loss attempts, including documented participation in weight loss programs or medically supervised diets.
  • Comprehensive medical records, including information about obesity-related health conditions and their impact on your overall health.
  • Proof of failed attempts at non-surgical weight loss methods.
  • Evidence of a multi-disciplinary evaluation, which may include consultations with a physician, surgeon, registered dietitian, and mental health professional.

5. Cost Sharing and Supplemental Coverage

While Medicare covers weight loss surgery, it’s important to understand that certain cost-sharing obligations may apply. These include deductibles, copayments, and coinsurance. Additionally, Medicare supplement insurance plans, also known as Medigap policies, may help cover some of the out-of-pocket expenses associated with weight loss surgery.


This article has provided you with a comprehensive overview of Medicare coverage for weight loss surgery. By meeting the qualifying criteria and adhering to Medicare’s guidelines, you can take a significant step towards improving your health and achieving your weight loss goals.

Remember, it’s always recommended to consult with a healthcare professional or contact Medicare directly for specific details and to determine your eligibility for coverage.


  • Medicare coverage for weight loss surgery is available under specific conditions, including a BMI of 35 or higher and obesity-related health conditions.
  • Approved weight loss surgery procedures include gastric bypass, gastric sleeve, laparoscopic adjustable gastric banding, and biliopancreatic diversion with duodenal switch.
  • Detailed documentation and evidence of prior weight loss attempts are necessary to qualify for coverage.
  • Cost-sharing obligations and supplemental coverage options may apply for weight loss surgery under Medicare.

Helpful Resources:

  1. – Weight Loss Surgery
  2. National Institute of Diabetes and Digestive and Kidney Diseases – Weight Loss Surgery
  3. American Society for Metabolic and Bariatric Surgery – Medicare Coverage for Bariatric Surgery

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