Summary & Overview
CPT 50690: Contrast Evaluation of Ileal Conduit, Ureter, Renal Pelvis
CPT code 50690 denotes a targeted diagnostic procedure in which contrast material is injected through an existing ileal conduit opening or through a catheter into the ureter, renal pelvis, or kidney to evaluate the renal collecting system. This procedure is used to detect structural defects, leaks, obstructions at the ureteropelvic junction, and other causes of flank or pelvic pain tied to urinary drainage. Nationally, CPT code 50690 matters because it supports precise anatomic diagnosis that can guide surgical planning, postoperative assessment, and management of patients with urinary diversion or suspected collecting-system pathology.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical and billing profile of the procedure, typical sites of service, and which payers commonly cover or adjudicate claims for this diagnostic service. The publication also summarizes common modifiers used with procedural reporting, contextual clinical indications, and where to look for related codes or policy updates.
This summary equips clinicians, billing staff, and policy analysts with the core clinical purpose of CPT code 50690, payer context, and a roadmap of the content areas covered: benchmarks and reimbursement considerations, relevant clinical scenarios, and recent policy guidance affecting diagnostic contrast injections of the renal collecting system.
Billing Code Overview
CPT code 50690 describes a diagnostic contrast injection into an existing ileal conduit, ureter, renal pelvis, or kidney through a catheter or artificial opening to evaluate the renal collecting system. The procedure is performed to identify defects or abnormal function of the collecting system, assess causes of pain, detect ureteropelvic junction obstruction, evaluate urine leakage around the ureter or renal pelvis site, or study the site where the ureter connects to the ileum.
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Service type: Image-guided contrast injection and diagnostic evaluation of the renal collecting system
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Typical site of service: Hospital outpatient department, ambulatory surgery center, or specialized radiology/interventional suite
Clinical & Coding Specifications
Clinical Context
A 62-year-old male with a previous radical cystectomy and ileal conduit presents with new-onset flank pain and intermittent low-grade fever. The urology team evaluates possible obstruction at the ureteroenteric anastomosis or urinary leak. The patient is brought to the radiology/interventional suite where the provider accesses the existing stoma appliance and catheter to inject water-soluble contrast through the ileal conduit and into the ureters and renal pelvis. Fluoroscopic imaging is obtained to assess conduit integrity, ureteral patency, site of anastomosis, and for evidence of leak or obstruction. The study is performed under sterile technique with local anesthesia as needed; conscious sedation may be used when clinically indicated. Images and fluoroscopic cine loops are reviewed by the interpreting physician to document filling defects, extravasation, strictures, or delayed drainage. Results guide subsequent management such as interventional drainage, ureteral stenting, or surgical revision.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Increased procedural services | Use when the procedure requires substantially greater work than typically required. |
22 | Increased procedural services (unusual procedural services) |