Summary & Overview
CPT 36838: Distal Revascularization and Interval Ligation (DRIL)
CPT code 36838 represents distal revascularization and interval ligation (DRIL), a vascular surgical procedure used to correct dialysis access–induced ischemia (Steal syndrome) by restoring perfusion to the hand while preserving hemodialysis access. This procedure matters nationally because it addresses a serious complication of hemodialysis access that can lead to hand ischemia, tissue loss, and loss of dialysis access if untreated. Access-preserving limb salvage procedures have implications for patient outcomes, downstream service utilization, and payer costs.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find clinical context for when DRIL is used, typical sites of service, and how the procedure fits into vascular access management. The publication provides benchmarks and policy-relevant considerations including coverage patterns and coding practice issues where available. It also outlines common payer-related factors that influence authorization and claims processing for this high-acuity surgical service. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 36838 describes a surgical procedure known as distal revascularization and interval ligation (DRIL) performed to correct dialysis access–induced ischemia, commonly called Steal syndrome. The procedure restores blood flow to the hand while preserving the existing hemodialysis access by creating a distal bypass and ligating the inflow to reduce diversion of arterial blood into the access.
Service type: Surgical vascular procedure to treat dialysis access–related ischemia.
Typical site of service: Inpatient or outpatient hospital operating room or vascular surgery suite; tertiary care centers and specialized vascular surgery clinics
Clinical & Coding Specifications
Clinical Context
A 62-year-old male with end-stage renal disease on chronic hemodialysis via a left brachial artery–to–cephalic vein arteriovenous fistula develops progressive ischemic symptoms in the left hand over several weeks. Symptoms include rest pain, coolness, pallor of the fingers, and decreased digital pulses; dialysis access flow remains adequate. Noninvasive vascular studies show distal hypoperfusion consistent with dialysis access–induced ischemia (Steal syndrome). The vascular surgery team evaluates the patient, documents baseline vascular examination, reviews duplex ultrasound and angiography to localize the steal physiology, and discusses surgical options. The patient is taken to the operating room for distal revascularization with interval ligation (DRIL). The procedure involves creation of an arterial bypass distal to the access inflow and ligation of the native artery segment between the bypass and the access to redirect antegrade flow to the hand while preserving access flow for hemodialysis. Typical intraoperative documentation includes indication, consent, laterality (LT/RT), anesthetic type, incision and dissection details, conduit used (e.g., reversed saphenous vein or prosthetic graft), anastomotic technique, distal perfusion assessments (palpable pulses, Doppler signals), estimated blood loss, complications, and post-operative plan including limb perfusion monitoring and dialysis access function assessment. Typical site of service is an inpatient or outpatient hospital operating room or ambulatory surgical center depending on acuity and comorbidities. Common payors for coverage considerations include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.
Coding Specifications
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