Summary & Overview
CPT 36820: Arteriovenous Anastomosis (Forearm) for Hemodialysis
CPT code 36820 denotes surgical creation of an arteriovenous anastomosis in the forearm to establish vascular access for maintenance hemodialysis. This procedure is a cornerstone of care for patients with end-stage renal disease who require reliable access for repeated dialysis sessions. Nationally, consistent coding and appropriate site-of-service designation affect access management, facility planning, and payment for nephrology and vascular surgery services.
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 arteriovenous fistula creation, common sites of service, and the operational implications for surgical and dialysis programs. The publication outlines typical billing and coding considerations, payer coverage patterns, and benchmark metrics where available.
The report is intended to inform clinical leaders, practice managers, and coding professionals about how CPT code 36820 is used in practice, highlight areas where policy updates influence reimbursement and site-of-service decisions, and summarize the clinical purpose and relevance of the procedure. Data not available in the input will be noted as such in the detailed sections.
Billing Code Overview
CPT code 36820 describes the surgical creation of an arteriovenous anastomosis by connecting a vein to an artery in the forearm to establish durable vascular access for patients with kidney failure who will receive hemodialysis. The procedure involves constructing a fistula to provide reliable high-flow access for repeated dialysis treatments.
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Service type: Surgical vascular access creation
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Typical site of service: Ambulatory surgical center or hospital operating room or procedure suite
Clinical & Coding Specifications
Clinical Context
A typical patient is a 58-year-old with end-stage renal disease (ESRD) secondary to long-standing diabetes mellitus and hypertension who requires reliable vascular access for maintenance hemodialysis. The vascular surgeon evaluates the patient in the outpatient vascular clinic, confirms suitable forearm arterial and venous anatomy by physical exam and duplex ultrasound mapping, and schedules a planned outpatient surgical procedure to create an autogenous radiocephalic or brachiocephalic arteriovenous anastomosis in the forearm. On the day of service the patient undergoes preoperative verification, informed consent, and regional or general anesthesia as indicated. The surgeon makes a forearm incision, mobilizes the chosen vein and artery, performs end-to-side anastomosis to create the arteriovenous fistula, ensures pulsatile flow, achieves hemostasis, and closes the wound. Postoperative workflow includes recovery monitoring, discharge instructions focused on fistula care and monitoring for patency, and scheduling follow-up for fistula maturation assessment and possible interventions if maturation is inadequate. Typical site of service is an ambulatory surgical center or hospital outpatient surgery department for elective creation of forearm arteriovenous access for hemodialysis.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Normal, or uncomplicated, post-operative care | Use for the primary service when no unusual circumstances altered the procedure or recovery and standard post-op care applies |