Ask Dr. Z

Would it be appropriate to code this as 50387? The Expel nepthroureteral stent has a C-code of C2617, which confirms that this wasn't a catheter being used for drainage rather this seems internal and a true stent. "The indwelling catheter and left flank were prepped and draped in the usual sterile fashion. Contrast was injected through the indwelling left nephroureteral stent with antegrade pyelography performed. The catheter was then cut and, over an Advantage wire, exchanged for a new 10 French 22 cm Expel nephroureteral stent. The distal and proximal loops were formed within the bladder and renal pelvis respectively."