CPT® Code 93897

Emboli detection without intravenous microbubble injection performed with transcranial Doppler study of intracranial arteries, complete (List separately in addition to code for primary procedure)

Emboli detection is a specialized diagnostic procedure that utilizes a complete transcranial Doppler study of the intracranial arteries to identify the presence of emboli within the cerebral circulation. Emboli are small particles, which can be gaseous or solid, that travel through the bloodstream and may obstruct blood flow, potentially leading to serious neurological events such as stroke. During this procedure, high-intensity signals are detected using Doppler ultrasound technology, which measures the movement of blood cells and any embolic material present. The intensity of these signals varies based on the type of embolus; gaseous emboli typically produce the highest intensity signals, while solid emboli, such as those formed from thrombotic, platelet, or atheromatous material, generate slightly lower intensity signals. The procedure involves applying a gel to the patient's skin, positioning a handheld Doppler probe over the relevant areas, and conducting continuous monitoring of blood flow. The data collected is recorded on a computer system that provides both auditory and visual feedback. A sophisticated computer algorithm analyzes the recordings to identify potential embolic signals, which are then reviewed by a physician. The physician differentiates genuine embolic signals from artifacts and compiles a comprehensive written report that details the findings of the study, contributing to the overall assessment of the patient's vascular health.