Summary & Overview
CPT 50770: Ureteral Reconstruction with Contralateral Ureter Anastomosis
CPT code 50770 captures a specialized urologic reconstruction: excision of a blocked or injured ureteral segment with anastomosis of the renal ureter to the contralateral healthy ureter. This code matters nationally because it represents complex reconstructive surgery required when ureteral length precludes reimplantation into the bladder, with implications for surgical resource use, facility setting, and payer coverage policies.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for when CPT code 50770 is reported, typical sites of service, and the principal considerations payers apply to authorization and coverage of reconstructive ureteral surgery. The publication summarizes common billing modifiers associated with complex surgical procedures, highlights areas where policy language affects payment and prior authorization, and outlines benchmarks and coding practice considerations relevant to hospital and surgical practice managers.
Overall, the content provides a practical reference for revenue cycle and clinical staff who need to identify when CPT code 50770 applies, what service it represents, and which national payers commonly adjudicate claims for this type of ureteral reconstruction.
Billing Code Overview
CPT code 50770 describes a ureteral reconstruction procedure in which a blocked or injured segment of the ureter is excised and the renal end of the remaining ureter is anastomosed to the contralateral healthy ureter. This operation is performed when the remaining ureteral length is insufficient for reimplantation into the bladder.
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Service type: Surgical reconstruction of the ureter (ureteroureterostomy with transposition to contralateral ureter)
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Typical site of service: Operating room in an inpatient or outpatient surgical setting, commonly performed by urologic or urology-trained surgeons
Clinical & Coding Specifications
Clinical Context
A typical patient is a 45–65-year-old adult presenting with unilateral ureteral obstruction or injury leading to a nonfunctional distal ureteral segment that cannot be reimplanted to the bladder because of insufficient ureteral length. Common etiologies include prior pelvic surgery with ureteral transection or stricture, severe ureteral ischemia after radiation, recurrent ureteral strictures not amenable to endoscopic repair, or traumatic ureteral injury. The clinical workflow includes preoperative imaging (CT urogram, retrograde pyelogram) to confirm the level and length of ureteral loss, cystoscopic evaluation as indicated, informed consent addressing alternatives (ureteroneocystostomy, ileal ureter, autotransplant), preoperative medical optimization, and coordination with anesthesia for general anesthesia. In the operating room, the surgeon exposes both ureters, excises the diseased segment, mobilizes the renal-side ureter and the contralateral healthy ureter, and constructs a cross-ureteroureterostomy (anastomosis) with stent placement as needed. Postoperative care includes monitoring urine output, analgesia, prophylactic antibiotics as indicated, imaging or antegrade/retrograde studies to confirm patency, and stent removal at the appropriate interval. This procedure is most commonly performed in an inpatient hospital or ambulatory surgery center with urology or transplant surgical support depending on complexity.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Normal or routine service | Use to indicate the primary procedure performed as planned when reporting the initial, unadjusted service. |