CPT® Code 50370

The procedure described by CPT® Code 50370 involves the surgical removal of a transplanted renal allograft, which is a donor kidney that has been previously implanted into a recipient. This operation is typically performed when the transplanted kidney is no longer functioning properly or is causing complications. The procedure begins with the physician making an incision in the lower abdomen to access the retroperitoneal space, which is the area behind the peritoneum that houses the kidneys and other structures. The transversalis fascia, a layer of tissue, is incised to facilitate entry into this space. Once inside, the peritoneum is retracted medially to provide a clear view of the transplanted kidney. The surgeon then carefully dissects the kidney free from the surrounding tissues, ensuring that the anastomosis sites—where the transplanted ureter and renal vessels connect to the recipient's body—are clearly exposed. The ureter, which carries urine from the kidney to the bladder, is meticulously dissected, ligated, and divided to prevent any leakage of urine. Similarly, the renal vessels, which supply blood to the kidney, are also dissected, ligated, and divided. After the kidney has been completely freed from its attachments, it is removed from the body. The surgeon then controls any bleeding that may occur during the procedure and proceeds to close the incisions made during the operation. This detailed process ensures that the removal of the transplanted kidney is performed safely and effectively, minimizing complications for the patient.