CPT® Code 43633

The procedure described by CPT® Code 43633 refers to a partial gastrectomy, specifically a distal gastrectomy, which involves the surgical removal of a portion of the stomach. This operation is typically performed through an upper midline abdominal incision, allowing the surgeon to access the abdominal cavity and the stomach directly. During the procedure, the stomach is carefully mobilized, and clamps are applied to delineate the area of resection. The stomach is then transected just distal to the clamp, and the duodenum is transected proximal to the clamp, resulting in the removal of the distal aspect of the stomach. Following the resection, a Roux-en-Y reconstruction is performed, which is a specific type of surgical connection that re-establishes continuity between the remaining stomach and the small intestine. This involves closing the proximal stump of the duodenum, mobilizing a section of the jejunum, and creating a Roux-en-Y limb by dividing the jejunum. The distal end of this jejunum is then anastomosed to the side of the remaining stomach, while the proximal end is connected to the side of the jejunum, facilitating the passage of food and digestive juices. This procedure is often indicated for various conditions affecting the stomach, including malignancies, ulcers, or other gastrointestinal disorders that necessitate partial removal of the stomach while ensuring proper digestive function through reconstruction.