CPT® Code 44406

Colonoscopy through stoma; with endoscopic ultrasound examination, limited to the sigmoid, descending, transverse, or ascending colon and cecum and adjacent structures

A colonoscopy through a stoma is a specialized procedure that involves the use of an endoscope to examine the interior of the colon via an existing stoma, such as a colostomy. This procedure is enhanced by the incorporation of endoscopic ultrasound (EUS), which allows for detailed imaging of the colon and surrounding structures. During the colonoscopy, the endoscope is carefully inserted through the stoma, enabling the physician to inspect the mucosal surfaces of the colon, extending from the stoma to the cecum or a small intestine anastomosis. The examination aims to identify any abnormalities, such as lesions or polyps, which may require further evaluation or intervention. As the endoscope is withdrawn, the physician thoroughly examines the entire circumference of the colon to ensure a comprehensive assessment. Following this, an echoendoscope is introduced and advanced to the area of concern under direct visualization. The echoendoscope is equipped with a transducer that is covered by a balloon filled with water, which enhances the quality of the ultrasound images by facilitating acoustic coupling. Continuous ultrasound imaging is performed during this phase, allowing for the visualization of any lesions or abnormalities, as well as the walls of the colon and adjacent pericolonic structures, including lymph nodes. This dual approach of colonoscopy and endoscopic ultrasound provides valuable diagnostic information, aiding in the management of various gastrointestinal conditions.