CPT® Code 50135

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1. Indications

The procedure of pyelotomy is indicated for patients presenting with specific conditions that necessitate surgical intervention on the renal pelvis. These indications include:

• Previous Kidney Surgery: Patients who have undergone prior surgical procedures on the kidney may require a complicated pyelotomy due to altered anatomy or complications arising from the previous surgery.
• Congenital Kidney Abnormalities: This includes conditions such as parenchymal disease, which affects the functional tissue of the kidney, and congenital obstruction of the ureteropelvic junction (UPJ), which can lead to hydronephrosis, a condition characterized by the swelling of the kidney due to urine buildup. Additionally, polycystic kidneys, where multiple cysts form in the kidneys, may also necessitate this procedure.

2. Procedure

The pyelotomy procedure involves several critical steps to ensure proper access and management of the renal pelvis. The steps include:

• Step 1: A skin incision is made over the kidney to provide access to the underlying structures. This incision is carefully planned to minimize damage to surrounding tissues.
• Step 2: Gerota's fascia, which is the connective tissue surrounding the kidney, is incised. Following this, the perirenal fat is dissected to expose the kidney and ureter adequately.
• Step 3: Blood vessels in the area are identified and controlled. This is typically done by placing a loop around each vessel to prevent excessive bleeding during the procedure.
• Step 4: The kidney and ureter are then exposed and visually examined. The ureter is traced upwards to locate the ureteropelvic junction (UPJ), which is critical for accessing the renal pelvis.
• Step 5: The posterior aspect of the renal pelvis is exposed and incised. This incision allows for exploration of the renal pelvis for any signs of disease or injury.
• Step 6: Depending on the findings, the physician may place a pyelostomy tube into the renal pelvis to facilitate urine drainage. A purse-string suture is used to secure the tube in place, and the surgical wound is closed in layers around the tube.
• Step 7: If calculi are present, they may be removed during this procedure. The physician may utilize techniques such as coagulum pyelolithotomy, where a clot is formed to envelop small stones for removal.
• Step 8: Upon completion of the procedure, drains may be placed as needed to manage any postoperative fluid accumulation, and the surgical wound is closed in layers to promote healing.

3. Post-Procedure

After the pyelotomy procedure, patients are typically monitored for any complications that may arise. Post-procedure care may include managing pain, monitoring for signs of infection, and ensuring proper drainage through the pyelostomy tube if placed. Patients may require follow-up imaging studies to assess the success of the procedure and the condition of the renal pelvis. Recovery time can vary based on the complexity of the surgery and the patient's overall health, but careful postoperative management is essential to ensure optimal healing and function of the kidney.