The landscape of genitourinary coding remains uniquely challenging as clinical complexity, evolving technology, and heightened regulatory scrutiny converge. Procedures involving the urinary tract and male reproductive system carry inherent risks, such as infection, bleeding, and device complications, many of which are bundled into global surgical packages and not separately reportable. Strict enforcement of NCCI edits, modifier requirements, and global surgery rules further complicates reporting, making accurate, detailed documentation more critical than ever. Common coding challenges continue to pose a significant risk to accuracy and compliance. Our nationally renowned subject matter experts have compiled key FAQs based on the challenges they encounter every year across the country, helping you overcome obstacles and achieve success in 2026.
To help translate these challenges into real-world coding scenarios, our experts have identified outlined some of the most frequently asked—and often misunderstood—questions below.
Traditionally, ‘catheter’ and ‘stent’ have been used somewhat interchangeably, but for the purposes of genitourinary procedure codes, “stent” is used for a completely internal device—no portion remains outside the body—while “catheter” indicates that a portion of the device does remain outside the body. The documentation must be clear so that, despite the term used by the physician, the correct code may be assigned.
For example, if the documentation states the placement of a nephroureteral stent that has one end in the bladder and the other connected to a drainage bag, this would be coded as a nephroureteral catheter placement, not a stent placement, despite the use of the term “stent.”
Different physicians may use different terms to describe the same procedures in the genitourinary system. Some common ones include the following:
| Indicator | Item/Code/Service | OPPS Payment Status |
| 50693–50695 | Placement of a ureteral stent (completely internal device) | J-J stents; Pigtail stents; Double-J stent; Double pigtail stent |
| 50433 | Placement of a nephroureteral drainage catheter that combines a ureteral catheter and a nephrostomy catheter into a single catheter for external and/or internal drainage | Internal/external catheter; Nephroureteral catheter; Nephroureteral stent; Universal stent |
| 50432 | Percutaneous placement of a nephrostomy tube into the kidney for drainage | Perc nephc; PCN; Percutaneous nephrostomy |
| 50690 +74425 | Ureterostomy – the ureters are detached from the bladder and attached directly to a stoma in the abdominal wall | Loopogram; Ileal loop study |
If there is an existing nephrostomy tube or nephroureteral catheter and that tract is enlarged by the radiologist to allow the surgeon to use larger instruments during an endourologic procedure, such as a kidney stone removal, this is reported with code 50436. When there is no existing nephrostomy tube or nephroureteral catheter and the radiologist must create the access as well as dilate the tract for the surgeon, this is reported with code 50437. Some phrases to look for in documentation to identify these procedures include balloon dilator, serial dilators, or sheath.
Neither of these codes should be used for the normal dilation of the tract for placement of a nephrostomy tube or nephroureteral catheter. Normal, basic dilation is included in the placement codes 50432, 50433, or 52334.
For this scenario, it is recommended to report unlisted procedure code 53899.
With every dollar of reimbursement counting more than ever in the face of payment decline and complex changes, it’s imperative to make sure your CPT® coding is correct and compliant. Master more coding topics and break down the complexity with our IR Masterclass: Genitourinary Interventional Radiology Coding webcast on demand. This webcast is an essential training tool for both audio and visual learners.
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