CPT code 93893 designates a contrast-enhanced transcranial Doppler ultrasound used to evaluate intracranial arterial blood flow and to detect venous–arterial shunts. The procedure uses Doppler imaging of intracranial arteries with microbubble contrast to improve visualization of flow dynamics, aiding diagnosis of right-to-left or other arteriovenous communications. Nationally, this code is relevant for cerebrovascular diagnostic pathways, stroke workups, and selected neurovascular evaluations where noninvasive detection of shunting affects clinical management.

Key payers in the national landscape include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for contrast-enhanced transcranial Doppler studies, common sites of service, and standard billing considerations tied to this procedure. The publication outlines typical use cases, where this modality fits alongside other neurovascular imaging options, and what to expect in payer coverage and claims processing at a high level.

This summary serves clinicians, coding staff, and policy analysts seeking concise information on the procedure represented by CPT code 93893, how it is used clinically to detect venous–arterial shunts, and which national payers commonly cover or process claims for this service.