Guide to Bariatric Surgery cpt 43843, 43845, 43846 - 43888

Bariatric surgery is a surgical procedure performed to aid in weight loss for individuals with obesity and related health conditions. This comprehensive guide aims to provide valuable information about bariatric surgery, including the relevant CPT codes, surgical procedures, and the reimbursement process. Whether you are a healthcare professional, patient, or interested individual, this guide will equip you with the necessary knowledge to understand and navigate the field of bariatric surgery.

Section 1: Understanding Bariatric Surgery

What is Bariatric Surgery?

Bariatric surgery, also known as weight loss surgery, refers to a set of procedures designed to help individuals with obesity achieve significant weight loss. These procedures modify the digestive system to limit food intake, reduce nutrient absorption, or both, resulting in sustained weight loss and improved overall health.

Importance of Bariatric Surgery

Bariatric surgery plays a crucial role in treating obesity-related health conditions, including type 2 diabetes, hypertension, sleep apnea, and cardiovascular disease. By promoting weight loss, it can lead to improved quality of life, increased life expectancy, and a reduction in the need for long-term medication.

Section 2: Common Bariatric Procedures and CPT Codes

Sleeve Gastrectomy

Sleeve gastrectomy, also known as gastric sleeve surgery, involves removing a portion of the stomach to create a smaller, banana-shaped stomach pouch. This restricts the amount of food that can be consumed, leading to weight loss. The CPT code for sleeve gastrectomy is 43644.

Gastric Bypass

Gastric bypass surgery involves creating a small stomach pouch and rerouting the small intestine to bypass a portion of the digestive tract. This limits both food intake and nutrient absorption. The CPT code for gastric bypass is 43645.

Duodenal Switch

Duodenal switch is a complex bariatric procedure that combines sleeve gastrectomy with intestinal rerouting. It involves removing a portion of the stomach, rerouting the small intestine, and creating a common channel for food and digestive enzymes. The CPT code for duodenal switch is 43845.

Laparoscopic Procedures

Many bariatric surgeries, including sleeve gastrectomy, gastric bypass, and duodenal switch, can be performed using minimally invasive laparoscopic techniques. Laparoscopic procedures offer advantages such as smaller incisions, reduced scarring, and faster recovery. The appropriate CPT codes for laparoscopic procedures are typically the same as their open counterparts, with the addition of a specific modifier.

Section 3: Frequently Asked Questions (FAQs)

FAQ 1 - What is the CPT code for Lap Band Removal?

The CPT code for lap band removal is 43770. This code covers the complete removal of an adjustable gastric band.

FAQ 2 - Is there a specific CPT code for Revision of Gastric Bypass?

Yes, the CPT code for revision of gastric bypass is 43848. This code covers procedures that involve altering or correcting a previous gastric bypass surgery.

FAQ 3 - What are the CPT codes for Bariatric Surgery?

There are several CPT codes associated with bariatric surgery, including sleeve gastrectomy (43644), gastric bypass (43645), duodenal switch (43845), and revision procedures (43848). It is important to consult the latest coding guidelines and documentation requirements for accurate billing and reimbursement.

Section 4: Reimbursement and Documentation

Heading: Reimbursement Process for Bariatric Surgery The reimbursement process for bariatric surgery involves proper documentation, accurate coding, and submission of claims to insurance companies or Medicare. It is essential to familiarize yourself with the specific coding guidelines, documentation requirements, and coverage policies of the relevant payer.

Resources for Reimbursement Information

To ensure accurate reimbursement, it is crucial to consult reliable resources. The Centers for Medicare and Medicaid Services (CMS) and professional organizations such as the American Society for Metabolic and Bariatric Surgery (ASMBS) provide coding guidelines, policy updates, and resources related to bariatric surgery reimbursement.


In conclusion, bariatric surgery plays a vital role in addressing obesity and its associated health conditions. By understanding the different procedures and corresponding CPT codes, healthcare professionals can provide appropriate care and ensure accurate billing and reimbursement. Patients can gain insight into the available surgical options and have informed discussions with their healthcare providers. As the field of bariatric surgery continues to evolve, staying updated with the latest coding guidelines and reimbursement practices is crucial for all stakeholders involved.

Please note that this article is for informational purposes only and should not be considered as medical advice. It is recommended to consult with healthcare professionals and coding experts for specific guidance on bariatric surgery procedures, CPT codes, and reimbursement processes.


1. Medtronic: Reimbursement Coding Guide Medicare Bariatric Surgery

2. CMS: Billing and Coding: Bariatric Surgical Management of Morbid Obesity

3. Johnson & Johnson Medical Devices: 2020 Bariatric Reimbursement Fact Sheet (Unavailable)