Summary & Overview
CPT 50100: UPJ Repair for Aberrant Renal Vessels
CPT code 50100 represents surgical correction of ureteropelvic junction (UPJ) obstruction by repositioning or incising aberrant renal vessels. This open reconstructive urologic procedure is performed to relieve obstruction where abnormal renal vasculature interferes with urine flow from the kidney into the ureter. Nationally, the code matters for specialty surgical billing, inpatient and outpatient hospital resource planning, and payer coverage policies for reconstructive renal surgery.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for UPJ repair, typical sites of service, and commonly reported billing practices. The publication summarizes national benchmark considerations, common claim modifiers associated with major surgical procedures, and policy elements that affect authorization and reimbursement for complex urologic reconstruction. Additionally, the analysis outlines areas where coding clarity or policy updates are most likely to affect claims processing, without state-specific detail.
This resource is intended to give clinicians, billing specialists, and policy staff a clear, national-level briefing on CPT code 50100, its clinical use, and the payment and administrative topics to watch when managing care for patients with UPJ obstruction due to aberrant renal vessels.
Billing Code Overview
CPT code 50100 describes surgical correction of an obstruction at the ureteropelvic junction by repositioning or incising aberrant renal vessels. This procedure addresses abnormal renal vascular anatomy that impinges on urine flow from the renal pelvis into the ureter.
Service Type: Open surgical reconstruction of the ureteropelvic junction (UPJ repair) involving renal vessel repositioning or incision.
Typical Site of Service: Inpatient or outpatient hospital surgical suite, depending on clinical complexity and patient status.
Clinical & Coding Specifications
Clinical Context
A 28-year-old adult presents with intermittent flank pain, recurrent urinary tract infections, and imaging demonstrating hydronephrosis due to a ureteropelvic junction (UPJ) obstruction caused by an aberrant renal vessel crossing the UPJ. After noninvasive evaluation including renal ultrasonography and CT urogram confirming extrinsic vascular compression and reduced drainage on a diuretic renal scan, the urologist schedules surgery. In the operating room under general anesthesia, the surgeon performs a pyeloplasty with relocation or incision of the aberrant renal vessel (CPT 50100) to relieve the obstruction. Typical workflow includes preoperative consent and imaging review, intraoperative identification of the aberrant vessel and UPJ, vascular mobilization or incision with preservation of renal perfusion, reconstruction of the UPJ (pyeloplasty), intraoperative assessment of urinary drainage, and postoperative monitoring for bleeding, urine leak, and renal function. Typical site of service is an inpatient or outpatient hospital operating room or ambulatory surgery center depending on clinical status and institutional practice. Common perioperative providers include urologists (pediatric or adult), anesthesiologists, and operating room nursing staff.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier | Not typically appended; indicates standard claim status when required by payer systems |