Summary & Overview
CPT 36909: Permanent Endovascular Occlusion or Embolization of Dialysis Circuit
CPT code 36909 covers permanent endovascular occlusion or embolization of a dialysis circuit that is found to be malfunctioning during a primary procedure. The code bundles radiological supervision and interpretation for any imaging necessary to complete the occlusion. Nationally, this code matters because it captures an urgent interventional response to dialysis circuit failure and affects facility and professional billing across hospital outpatient and interventional radiology settings.
Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical scenario and service setting associated with CPT code 36909, an overview of common billing modifiers and typical use cases, and a summary of how payers treat this interventional dialysis service. The publication highlights benchmarks and policy context relevant to coverage and coding practice, and it outlines common documentation elements that support correct use of the code.
This summary provides clinicians, coding professionals, and revenue managers with a clear reference to when CPT code 36909 applies, where the procedure is typically performed, and which major payers are relevant for national billing considerations. Data not available in the input are identified where applicable.
Billing Code Overview
CPT code 36909 describes the intentional, permanent endovascular occlusion or embolization of a patient's dialysis circuit performed when a malfunction is discovered during a primary procedure on that same circuit. The service represents deliberate vascular occlusion to address dialysis circuit failure and includes radiological supervision and interpretation for any imaging required to perform the embolization or occlusion.
Service type: Interventional endovascular procedure (embolization/occlusion) performed during a primary dialysis-circuit procedure.
Typical site of service: Hospital-based interventional radiology suite or hospital outpatient department where dialysis circuit access and interventional procedures are performed.
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient with an arteriovenous graft for hemodialysis presents during a planned dialysis circuit intervention when the interventionalist identifies irreversible graft damage with persistent malfunction and risk to the patient (e.g., recurrent infection, thrombosis, or non-salvageable vascular injury). While performing the primary dialysis circuit procedure, the provider determines the graft must be permanently occluded via endovascular embolization to prevent further complications. The workflow includes pre-procedure assessment (review of access history, imaging and labs), sterile endovascular access, angiography to confirm anatomy and dysfunction, deployment of coils or vascular plugs to occlude the circuit, and completion angiography to confirm cessation of flow. Radiological supervision and interpretation are provided for all imaging needed during the embolization, and radiology documentation includes images, fluoroscopy time, devices used, and a procedure note describing the deliberate permanent occlusion of the dialysis circuit.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Normal or baseline procedure | Use when the service represents the usual, expected professional service by the operating practitioner. |
22 |