CPT® Code 93886

A transcranial Doppler study, identified by CPT® Code 93886, is a specialized ultrasound procedure designed to assess the blood flow within the intracranial arteries. This study focuses on the evaluation of three distinct regions of the intracranial arteries: the right anterior circulation territory, the left anterior circulation territory, and the posterior circulation territory. The primary purpose of this complete study is to provide detailed information regarding the pattern and direction of blood flow in these critical areas of the brain. During the procedure, a clear gel is applied to specific locations on the patient's skin, including the back of the neck, above each cheekbone, in front of both ears, and over both eyelids. A Doppler probe is then positioned on the skin at these sites, emitting sound waves that interact with the moving blood cells within the arteries. The reflected sound waves are captured and amplified, allowing for audible feedback that indicates blood flow dynamics. Changes in the pitch of these sound waves can signify variations in blood flow, such as reductions or complete obstructions. Additionally, the sound waves are converted into visual images that illustrate the speed and direction of blood flow, as well as any potential obstructions. Spectral Doppler analysis further enhances the study by providing insights into the anatomical structure and hemodynamic function of the intracranial arteries, including the detection of narrowing and plaque formation. Following the completion of the study, the physician conducts a thorough review of the findings and generates a written interpretation, which is essential for clinical decision-making. For a comprehensive evaluation encompassing all three regions, the appropriate code to use is 93886, while a limited study involving two regions or fewer should be coded as 93888.