CPT® Code 43266

Esophagogastroduodenoscopy, flexible, transoral; with placement of endoscopic stent (includes pre- and post-dilation and guide wire passage, when performed)

Esophagogastroduodenoscopy (EGD) is a diagnostic and therapeutic procedure that involves the use of a flexible endoscope to visualize the upper gastrointestinal tract, which includes the esophagus, stomach, and duodenum. This procedure is particularly significant when it comes to the placement of an esophageal stent, which is a tubular device used to keep a narrowed or obstructed area of the esophagus open. The flexible endoscope is introduced transorally, meaning it is inserted through the mouth, allowing for direct visualization of the upper digestive tract. During the procedure, various anatomical structures are examined, including the velopharyngeal closure, the base of the tongue, and the hypopharynx. The vocal cords are also assessed for motion, and the pharyngeal musculature is evaluated to ensure proper function. As the endoscope is advanced, it passes through the cricopharyngeus muscle, where the patient may be asked to perform actions such as swallowing or burping to facilitate the passage of the scope. The endoscope is then navigated through the entire length of the esophagus, allowing for the identification of any abnormalities. Once the endoscope reaches the stomach and duodenum, the mucosal surfaces are inspected both during insertion and withdrawal of the scope. In cases where there is a narrowing or stricture of the esophagus, often due to conditions such as esophageal or lung cancer, or the presence of a malignant bronchoesophageal fistula, the need for stent placement is evaluated. If pre-dilation of the stricture is necessary, a guidewire is introduced through the endoscope, followed by the use of rigid tubes or a balloon catheter to dilate the stricture. The stent is then positioned and deployed to maintain patency in the esophagus, ensuring that the patient can swallow and digest food more effectively. This procedure is critical for patients experiencing significant esophageal obstruction, providing both relief of symptoms and improved quality of life.