Summary & Overview
HCPCS Level II C7547: Conversion of Nephrostomy to Nephroureteral Catheter
HCPCS Level II code C7547 represents the percutaneous conversion of a pre-existing nephrostomy catheter to a nephroureteral catheter with ureteral stricture balloon dilation, including diagnostic nephrostogram and/or ureterogram when performed and all imaging guidance and radiological supervision and interpretation. This code captures a bundled interventional radiology episode that addresses ureteral obstruction and facilitates urinary drainage through the ureteral lumen.
Nationally, this code matters because it standardizes reporting for a common image-guided urologic intervention performed in outpatient and inpatient settings, informs payment and utilization tracking, and supports quality and utilization management for complex urinary drainage procedures. Payors discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will learn the clinical context and service components captured by C7547, typical sites of service, and which major payors cover such services. The publication outlines benchmarks and common billing considerations associated with bundled imaging and interventional radiology supervision, highlights potential policy updates affecting coding and payment for percutaneous urinary interventions, and provides clinical context for appropriate use. Data not available in the input for payor-specific rates, associated taxonomies, ICD-10 diagnoses, related codes, and service-line financials.
Billing Code Overview
HCPCS Level II code C7547 describes the percutaneous conversion of a pre-existing nephrostomy catheter to a nephroureteral catheter. The procedure includes ureteral stricture balloon dilation and may include a diagnostic nephrostogram and/or ureterogram when performed. Imaging guidance (for example, ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation are included in the code description.
Service type: Interventional radiology procedure involving percutaneous renal and ureteral access and intervention
Typical site of service: Hospital outpatient department or ambulatory surgical center with interventional radiology capability
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with an indwelling percutaneous nephrostomy catheter placed for urinary decompression due to obstructive uropathy from a ureteral stricture. The patient presents for planned conversion of the existing nephrostomy catheter to a nephroureteral catheter because ongoing drainage into the bladder is desired or to facilitate antegrade access for ureteral evaluation and treatment. Pre-procedure evaluation includes review of prior imaging and recent labs (including coagulation profile), assessment for active infection, and confirmation of the existing nephrostomy tract maturity. In the interventional radiology suite, conscious sedation or monitored anesthesia care is used per institutional practice. Under ultrasound and fluoroscopic guidance, contrast injection via the nephrostomy obtains a diagnostic nephrostogram and/or ureterogram to delineate anatomy and identify the stricture. A guidewire is advanced through the nephrostomy tract, across the ureteral stricture into the bladder when feasible. Balloon dilation of the ureteral stricture is performed percutaneously. The existing nephrostomy catheter is then exchanged or converted to a nephroureteral catheter to maintain antegrade drainage and stenting across the dilated segment. Imaging guidance and radiological supervision and interpretation are provided throughout. Post-procedure care includes monitoring for bleeding, infection, hemodynamic stability, and confirmation of catheter position and drainage, with instructions for catheter care, planned follow-up imaging, and outpatient urology or interventional radiology clinic assessment for definitive management.
Coding Specifications
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