CPT® Code 36100

The CPT® Code 36100 refers to the procedure involving the introduction of a needle or intracatheter into either the carotid or vertebral artery. This procedure is essential for various diagnostic and therapeutic interventions. In the case of accessing the carotid artery, the clinician first locates the artery through palpation, ensuring proper stabilization between the index and middle fingers. The needle or intracatheter is then introduced through the skin and carefully advanced toward the artery until it makes contact with the artery wall, at which point the artery is punctured. It is crucial to advance the needle or intracatheter in a cephalad direction while taking care to avoid any injury to the intima, which is the inner lining of the carotid artery. For the vertebral artery, the approach is lateral, and the needle or intracatheter is advanced through one of the cervical interspaces. The clinician compresses the skin of the neck against the cervical spine using the index and middle fingers before puncturing the skin. The needle or intracatheter is then advanced until it reaches the intervertebral foramina at the anterior tubercle of the transverse process, allowing for access into the vertebral artery. To confirm proper placement, blood is aspirated from the needle or intracatheter. This procedure may also involve the injection of medication or radiopaque contrast media as necessary, facilitating further diagnostic imaging or treatment interventions.