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.