CPT® Code 44403

A colonoscopy through a stoma is a specialized procedure that involves the examination of the colon via an existing stoma, such as a colostomy. This procedure is performed to inspect the mucosal surfaces of the colon, extending from the stoma to the cecum or a small intestine anastomosis. During the colonoscopy, the endoscope is introduced through the colostomy opening, allowing for a thorough inspection of the colon's interior. The primary goal of this procedure is to identify any abnormalities, such as lesions or other pathological changes, within the mucosal layer. In the context of CPT® Code 44403, the procedure includes the endoscopic mucosal resection of identified lesions. This involves marking the borders of the lesion with electrocautery, injecting diluted adrenaline into the submucosal layer to facilitate separation of the lesion from the underlying muscle, and excising the lesion using a snare. The procedure is designed to ensure that any abnormal tissue is effectively removed while minimizing damage to surrounding healthy tissue. The careful approach taken during this procedure is crucial for both diagnostic and therapeutic purposes, as it allows for the removal of potentially harmful lesions while providing a clear view of the colon's health.