CPT® Code 45172

The CPT® Code 45172 refers to the excision of a rectal tumor using a transanal approach, which is a minimally invasive surgical technique. This procedure involves the complete removal of the tumor along with a margin of healthy tissue, ensuring that the excised area is free of cancerous cells. The term "full thickness" indicates that the excision extends through all layers of the rectal wall, including the rectal mucosa, the muscularis mucosa, the submucosa, and the muscularis propria, which is the thick muscle layer responsible for the contraction of the rectum during bowel movements. This approach is particularly beneficial for tumors located within the rectum, as it allows for direct access to the tumor without the need for larger incisions that would be required in more invasive surgical methods. The procedure is typically performed with the aid of an anoscope, a tubular instrument that provides visualization of the rectal area, facilitating accurate tumor identification and excision. Following the removal of the tumor, frozen sections may be taken to confirm that the margins are clear of malignancy, and the specimen is sent for pathological evaluation to ensure proper diagnosis and treatment planning.