43645 Laparoscopic gastric bypass incl smll i
Also known as: lap Roux-en-Y bypass, laparoscopic intestinal rerouting, revised bypass, lap gastric bypass complex
Laparoscopic gastric bypass with small intestine reconstruction, including revision of prior gastric bypass.
In Plain Language
laparoscopic weight loss surgery with bowel rearrangement; intestinal bypass revision
Clinical Context
Used for primary or revision bariatric cases with small intestinal involvement. May include revision of inadequate weight loss or complications from prior bypass.
RVU Breakdown
| Work RVU | 30.74 |
| Total RVU | 30.74 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
As a surgical CPT code, proper documentation must include the operative report detailing the procedure performed, patient positioning, approach, findings, and any complications. This code has a 90-day global period, which includes the day of the procedure, 1 day preoperative, and 90 days of postoperative care. Ensure the diagnosis code (ICD-10) supports medical necessity for the procedure.
How This Code Compares
With a work RVU of 30.74, this code ranks in the 93rd percentile among Surgery codes — 3.8x the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 43645?
CPT 43645 (Laparoscopic gastric bypass incl smll i) is a Surgery code. Laparoscopic gastric bypass with small intestine reconstruction, including revision of prior gastric bypass.
What is the wRVU value for CPT 43645?
The work RVU for CPT 43645 is 30.74. This code is primarily used by Bariatric Surgery, General Surgery. It has a 90-day global period.
When is CPT 43645 used?
Used for primary or revision bariatric cases with small intestinal involvement. May include revision of inadequate weight loss or complications from prior bypass.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.