Summary & Overview
CPT 50396: Ureteral/Nephrostomy/Pyelostomy Pressure Measurement
CPT code 50396 represents a focused diagnostic procedure to measure urinary tract pressures by connecting an indwelling ureteral catheter or an existing nephrostomy or pyelostomy tube to a manometer. It is used to detect obstruction, blockage, or dilatation of the upper urinary tract and informs clinical decisions about urinary drainage and intervention. Nationally, this procedure is relevant for hospitals and ambulatory centers that manage percutaneous and indwelling urinary access devices and for clinicians assessing renal outflow dynamics.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The analysis addresses payment benchmarks, coding guidance, common clinical indications, and typical sites of service for this diagnostic manometry procedure. Readers will find benchmarks for reimbursement and utilization patterns where available, a summary of clinical context and indications, and notes on documentation and coding considerations that support accurate billing. Data not available in the input is noted where applicable. The content is written for a national audience and is intended to inform coding, billing, and administrative staff, as well as clinicians involved in urologic diagnostic services.
Billing Code Overview
CPT code 50396 describes a diagnostic pressure measurement procedure in which a provider connects an indwelling ureteral catheter or an existing nephrostomy or pyelostomy tube to a manometer line to measure fluid pressures or pressure differentials between the renal pelvis and ureter. The procedure is performed to evaluate obstruction, blockage, or dilatation of the upper urinary tract.
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Service type: Diagnostic urologic pressure measurement
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Typical site of service: Hospital outpatient department, ambulatory surgery center, or inpatient setting where existing nephrostomy, pyelostomy, or ureteral catheters are managed and manometry can be performed
Clinical & Coding Specifications
Clinical Context
A typical patient is a 58-year-old male with a history of recurrent flank pain and hydronephrosis found on renal ultrasound. The patient has an indwelling ureteral stent placed previously for ureteral obstruction from a ureteral stone and persistent flank discomfort. The urology team schedules a renal pelvis pressure measurement using a manometer connected to the existing ureteral catheter to assess for residual obstruction and to quantify pelvic pressure prior to definitive intervention.
Workflow: The patient arrives to the outpatient endoscopy suite or hospital radiology/interventional fluoroscopy unit. The existing ureteral catheter or nephrostomy tube is inspected and prepped using sterile technique. A manometer line is connected to the external port of the indwelling ureteral stent or nephrostomy/pyelostomy tube. Baseline pressures are recorded with the patient in a standardized position, then with provocative maneuvers or contrast instillation as indicated. Findings documenting elevated renal pelvic pressures or pressure differentials between kidney and bladder are recorded in the procedure note. The clinician disconnects the manometer, secures the catheter, and documents indications, measurements, and any immediate complications before patient discharge or transfer for further management.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing only the physician interpretation component separate from technical services. |