Last updated: March 2026
How Much Does Gastric Bypass Surgery (Roux-en-Y) Cost?
Cost Breakdown by Type
| Type / Procedure | Without Insurance | With Insurance |
|---|---|---|
| Laparoscopic Roux-en-Y Gastric Bypass | $15,000 – $30,000 | $3,500 – $8,000 |
| Robotic Gastric Bypass | $18,000 – $35,000 | $4,500 – $10,000 |
| Revision Gastric Bypass | $20,000 – $40,000 | $5,000 – $12,000 |
CPT/ADA Code: 43644
What Affects the Cost
- Brand-name vs. generic availability
- Insurance formulary tier placement
- Pharmacy choice (retail vs. mail-order vs. Costco)
- Manufacturer savings cards and coupons
- Dosage and quantity prescribed
- Geographic location
Insurance Coverage
Typical coverage: May be covered with documentation of BMI criteria and supervised weight loss history
Most insurance plans use a tiered formulary: Tier 1 (generic) $0-$15 copay, Tier 2 (preferred brand) $25-$75, Tier 3 (non-preferred brand) $50-$150, Tier 4 (specialty) $100-$500+. Prior authorization may be required for certain medications. Step therapy may require trying cheaper alternatives first.
How to Save Money
- Always ask for generic when available — saves 50-90%
- Use GoodRx, RxSaver, or similar discount cards
- Costco pharmacy is open to non-members and often has lowest prices
- Mark Cuban's Cost Plus Drugs offers transparent low pricing
- Manufacturer patient assistance programs provide free medication to qualifying patients
- HSA/FSA funds can cover medication costs tax-free
Related Procedures & Costs
Frequently Asked Questions
Gastric bypass costs $15,000 to $35,000 without insurance. It is generally more expensive than gastric sleeve due to the complexity of the procedure.
Gastric bypass may produce slightly more weight loss (65-80% of excess weight) and better resolution of diabetes, but has more potential complications.
Hospital stay is 2-3 days. Most patients return to work in 2-4 weeks. Diet progression from liquids to solid food takes 6-8 weeks.