Summary & Overview
CPT 50555: Endoscopic Renal/Pyeloscopic Examination with Biopsy
CPT code 50555 defines an endoscopic renal or pyeloscopic procedure performed through a previously established tract to inspect the kidney, renal pelvis, and ureter and obtain tissue biopsy. This code captures a diagnostic endoscopic approach to the intrarenal collecting system and is relevant to urology, interventional radiology, and surgical nephrology practices. Nationally, accurate use of this code affects clinical documentation, coding compliance, and appropriate claims processing for procedures performed in operating rooms and ambulatory surgical centers.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find context on the clinical intent of the code, typical sites of service, common modifiers (listed elsewhere), and how this service is generally classified for billing purposes. The publication provides benchmarks and policy considerations relevant to payer coverage and claims adjudication, highlights typical clinical scenarios prompting use of the code, and outlines areas where documentation supports accurate coding. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 50555 describes insertion of an endoscope through a previously established opening between the kidney collecting system or renal pelvis and the exterior of the body for examination of the kidney, renal pelvis, and ureter with biopsy. The procedure involves direct visualization of the intrarenal collecting system and sampling of tissue.
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Service type: Endoscopic renal/pyeloscopic diagnostic procedure with biopsy
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Typical site of service: Operating room or ambulatory surgical center where endoscopic urologic procedures are performed
Clinical & Coding Specifications
Clinical Context
A typical patient is a 58-year-old with hematuria and a history of recurrent nephrolithiasis who presents after imaging (CT urogram or renal ultrasound) identifies a suspicious lesion or persistent filling defect in the renal pelvis or collecting system. The urologist schedules a percutaneous or transpelvic endoscopic evaluation through a previously established nephrostomy or pyelostomy tract. Under general or monitored anesthesia care in an ambulatory surgery center or hospital operating room, the provider inserts a flexible or rigid endoscope through the existing external opening into the renal collecting system, inspects the kidney, renal pelvis, and ureteral orifices, and obtains cold or forceps biopsy specimens for histopathology. The workflow includes preoperative consent and imaging review, anesthesia induction, sterile preparation of the existing tract, endoscopic visualization and targeted biopsy, specimen handling and labeling, hemostasis and tract management (temporary nephrostomy catheter exchange or removal), immediate postoperative recovery, and pathology follow-up with the ordering clinician for final diagnosis and any subsequent definitive therapy planning.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When reporting only the physician’s interpretation or professional portion if technical component billed separately |