CPT® Code 50606

Add-On Code

Endoluminal biopsy of ureter and/or renal pelvis, non-endoscopic, including imaging guidance (eg, ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation (List separately in addition to code for primary procedure)

The CPT® Code 50606 refers to an endoluminal biopsy of the ureter and/or renal pelvis that is performed using non-endoscopic techniques. This procedure is typically conducted in conjunction with other genitourinary interventions. The biopsy is facilitated through a catheter that has been previously positioned, such as for a nephrostogram or ureterogram. The process involves the placement of a guidewire to explore the ureteropelvic junction, allowing access to the ureter. Once the area of interest is identified, the catheter is maneuvered past the lesion or stricture, and the guidewire remains in place as the catheter is withdrawn. A sheath is then advanced over the guidewire to the targeted area, followed by the introduction of a specialized brush biopsy catheter. This catheter is used to obtain multiple samples from the lesion through brushings. After the biopsy samples are collected, they are placed in a container for laboratory analysis. The procedure also includes all necessary imaging guidance, such as ultrasound or fluoroscopy, along with the associated radiological supervision and interpretation. It is important to note that this code is considered an add-on code, meaning it should be reported in addition to the primary procedure performed.