Summary & Overview
CPT 93880: Complete Bilateral Duplex Scan of Extracranial Arteries
CPT 93880 denotes a complete bilateral duplex scan of extracranial arteries, a noninvasive imaging procedure that combines ultrasound imaging and Doppler flow assessment to evaluate carotid and vertebral circulation. This test is widely used in the evaluation of transient ischemic attacks, sudden visual loss, and suspected carotid or vertebral artery disease. Nationally, the code is important for vascular diagnostics, stroke-risk stratification, and preoperative vascular assessment.
Key payers included in this overview are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines coverage considerations and coding context across major commercial and public payers and summarizes clinical scenarios that commonly align with the procedure.
Readers will learn what CPT 93880 covers clinically and operationally, how it relates to unilateral or limited duplex studies, typical settings where the service is delivered, and common billing elements such as professional and technical component distinctions (not detailed here). The summary provides benchmarks for code use, clarifies clinical indications that commonly prompt the study, and highlights adjacent coding considerations. Data not available in the input for specific payer policies, reimbursement rates, or site-specific utilization is noted where applicable.
CPT Code Overview
CPT 93880 is a duplex ultrasound examination of the extracranial arteries, performed as a complete bilateral study to evaluate blood flow and vessel structure in the neck and proximal cerebral circulation. The procedure combines real-time B-mode imaging with Doppler flow assessment to detect stenosis, occlusion, or other vascular abnormalities.
Service Type: Non‑Invasive Cerebrovascular Arterial Studies
Typical Site of Service: Diagnostic imaging – likely office (POS 11) or hospital outpatient setting
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult presenting to a diagnostic imaging facility or an outpatient clinic with symptoms suggestive of cerebrovascular insufficiency such as transient ischemic attack symptoms, transient monocular vision loss, focal neurological deficits, or follow-up surveillance after known carotid disease. The patient is referred by a primary care physician, neurologist, or vascular surgeon for a non-invasive evaluation of extracranial carotid and vertebral arteries. The workflow: the referring clinician orders a 93880 (Duplex scan of extracranial arteries; complete bilateral study). The patient arrives at an outpatient imaging site (office POS 11 or hospital outpatient). A vascular sonographer performs a bilateral duplex scan including B-mode imaging, spectral Doppler, and color flow assessment of the common carotid, internal carotid, external carotid, and vertebral arteries. Images and velocity measurements are documented. A radiologist, vascular surgeon, or qualified interpreting physician reviews the images and issues a signed report that includes peak systolic and end-diastolic velocities, degree of stenosis calculations, and diagnostic impressions to guide management.
Coding Specifications
Modifier 26 (Professional Component):
- Use when billing only the interpreting physician’s professional component for
93880(report and physician interpretation) and the technical component is billed separately by the facility.
Modifier TC (Technical Component):
- Use when billing only the facility/technical component for
93880(equipment, technologist time, and image acquisition) and the interpreting physician bills professional component separately.