52356

Cystourethroscopy, with ureteroscopy and/or pyeloscopy; with lithotripsy including insertion of indwelling ureteral stent (eg, Gibbons or double-J type)

CPT code 52356 represents a comprehensive urological procedure encompassing cystourethroscopy combined with ureteroscopy and/or pyeloscopy, specifically performed for the purpose of lithotripsy (fragmentation of stones), and intrinsically includes the insertion of an indwelling ureteral stent, such as a Gibbons or double-J stent. This procedure is predominantly utilized in the management of urinary tract calculi, specifically those lodged within the ureter or the renal pelvis, that are not amenable to conservative management or extracorporeal shock wave lithotripsy (ESWL). The procedure begins with the visualization of the urethra and bladder (cystourethroscopy) to safely identify the ureteral orifices. A guidewire is typically advanced under fluoroscopic guidance into the ureter and renal pelvis. An endoscope (ureteroscope or pyeloscope) is then advanced over the wire into the ureter or kidney to directly visualize the calculus. Once the stone is identified, lithotripsy is performed. The fragmentation of the stone can be achieved using various energy modalities, with holmium laser lithotripsy being the most common, though pneumatic, electrohydraulic, or ultrasonic lithotripsy may also be utilized. The fragments may be basketed and extracted, or if sufficiently small, allowed to pass spontaneously. A critical and defining component of CPT code 52356 is the culmination of the procedure with the deployment of an indwelling ureteral stent. The stent serves a dual purpose: it prevents ureteral obstruction caused by post-operative edema or the passage of residual stone fragments, and it promotes ureteral dilation and healing. The inclusion of the stent placement distinguishes this code from others in the same family, such as 52353 (lithotripsy without stent placement). Providers must ensure that the documentation explicitly details all components: the endoscopic approach, the method and successful execution of the lithotripsy, and the precise type and positioning of the indwelling ureteral stent. This code is explicitly for the treatment of stones and is not to be used for tumor resections or biopsies. It is crucial in the surgical management armamentarium for nephrolithiasis and ureterolithiasis, providing an effective, minimally invasive solution that significantly alleviates patient morbidity associated with obstructive uropathy and renal colic.

Clinical Indications

  • Symptomatic ureteral calculi causing severe renal colic unresponsive to medical expulsive therapy.
  • Renal calculi located in the renal pelvis or calyces causing obstruction, persistent pain, or recurrent urinary tract infections.
  • Ureteral stones larger than 5mm to 10mm with a low probability of spontaneous passage.
  • Calculi associated with acute obstructive uropathy requiring immediate decompression, fragmentation, and drainage.
  • Failure of prior extracorporeal shock wave lithotripsy (ESWL) to adequately fragment renal or ureteral stones.

Procedure Steps

  1. The patient is placed in the dorsal lithotomy position under general or regional anesthesia.
  2. The external genitalia are prepped and draped in a sterile fashion.
  3. A cystoscope is introduced through the urethra into the bladder to inspect the lower urinary tract and identify the ureteral orifices.
  4. A guidewire is cannulated into the targeted ureteral orifice and advanced to the renal pelvis under fluoroscopic guidance.
  5. A rigid or flexible ureteroscope is passed over the guidewire into the ureter and advanced to the level of the calculus.
  6. Direct visual confirmation of the ureteral or renal stone is obtained.
  7. Lithotripsy (typically laser, pneumatic, or ultrasonic) is deployed to fragment the stone into smaller passable pieces or dust.
  8. Stone fragments may be removed using a stone basket or allowed to pass spontaneously depending on fragment size.
  9. An indwelling ureteral stent (e.g., double-J stent) is advanced over the guidewire and deployed to span from the renal pelvis to the bladder.
  10. Correct placement of the proximal and distal curls of the stent is confirmed via fluoroscopy and cystoscopy.
  11. All instruments are removed, and the bladder is drained.

Coding Guidelines

  • CPT code 52356 inherently includes the insertion of an indwelling ureteral stent; do not report 52332 (stent insertion) separately.
  • Do not report 52356 in conjunction with 52353 (cystourethroscopy with lithotripsy) for the same ureter/kidney.
  • If the procedure is performed bilaterally, append modifier 50 to the code.
  • Stone extraction or basketing is included in the complexity of the procedure when performed on the same stone; do not separately report 52352 (cystourethroscopy with stone removal) for the same side.
  • Fluoroscopy is generally considered inclusive; check specific payer guidelines regarding separate reporting of imaging guidance codes.
  • This code must only be used for lithotripsy and stent placement; it is not applicable for tumor resection.

Associated ICD-10 Codes