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The CPT® Code 93875 refers to a comprehensive noninvasive physiologic study of the extracranial arteries, which are the blood vessels located outside the skull. This procedure is designed to assess blood flow and vascular health in these arteries, which can be critical for diagnosing various conditions related to blood circulation. The study is typically performed using advanced ultrasound imaging techniques, allowing for real-time visualization of blood flow dynamics without the need for invasive procedures. In addition to Doppler ultrasound spectral analysis, the study may incorporate other noninvasive methods such as periorbital flow direction assessments and ocular pneumoplethysmography. These techniques collectively provide valuable information regarding the patency and functionality of the extracranial arteries, aiding healthcare professionals in making informed clinical decisions regarding patient care.
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