CPT® Code 46937

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CPT® Code 46937 refers to the procedure of cryosurgery specifically for the treatment of benign rectal tumors. Cryosurgery is a minimally invasive technique that utilizes extreme cold to destroy or reduce the size of abnormal tissue. In this procedure, the physician employs liquid nitrogen, which is a cryogenic agent, to freeze the tumor. This freezing process effectively targets the tumor cells while preserving the surrounding healthy tissue, thereby minimizing collateral damage. The application of a cryoprobe, which can be either placed directly on the tumor's surface or inserted into the tumor itself, allows for precise delivery of the freezing agent. As the liquid nitrogen circulates through the probe, it super cools the tip, creating an ice ball that engulfs the tumor. The physician monitors the temperature of the tissue to ensure it reaches the necessary level for effective treatment. Once the desired freezing effect is achieved, the probe is deactivated, and the tissue is allowed to thaw. It is important to note that multiple freeze-thaw cycles may be necessary to ensure complete destruction or significant reduction of the tumor. This procedure is specifically coded as 46937 for benign tumors, while a different code, 46938, is designated for malignant tumors.