Question: My doctor did a cystoscopy, ureteroscopy, biopsy of renal pelvic mass, holmium laser ablation of renal pelvic mass, and placement of a double J stent. Which biopsy code would I use? Answer: You should report CPT 52354 (Cystourethroscopy, with ureteroscopy and/or pyeloscopy; with biopsy and/or fulguration of ureteral or renal pelvic lesion) for the biopsy and holmium ablation of a renal pelvic mass. Add 52332 (Cystourethroscopy, with insertion of indwelling ureteral stent [eg, Gibbons or double-J type) for the placement of the double-J stent.