CPT® Code 61708

The procedure described by CPT® Code 61708 involves the surgical intervention for conditions such as an intracranial aneurysm, vascular malformation, or carotid-cavernous fistula through the technique of intracranial electrothrombosis. An intracranial aneurysm, also known as a cerebral or intracerebral aneurysm, is characterized by a weakened segment of a blood vessel wall that bulges and fills with blood. This condition can exert pressure on adjacent brain structures, potentially leading to pain and neurological impairments. In severe cases, the aneurysm may rupture, resulting in an intracranial hemorrhage, which is a life-threatening event. Intracranial aneurysms can be either congenital, meaning they are present at birth, or acquired due to various factors over time. A vascular malformation encompasses a range of abnormalities in blood vessel formation and structure, which can disrupt normal blood flow and lead to complications. The carotid-cavernous fistula is a specific type of vascular malformation that creates an abnormal connection between the carotid artery—either external or internal—and the cavernous sinus, a cavity located behind the eyes that drains blood from the brain. The surgical approach for this procedure typically involves a craniotomy, which is performed by creating flaps in the scalp and drilling burr holes in the skull. The intervening bone is then cut and lifted to access the brain. During the procedure, a catheter is introduced into the carotid artery supplying the affected area, and a microcatheter is navigated to the precise location of the aneurysm, malformation, or fistula. The introduction of a coil via a delivery wire, combined with the application of a positive electrical current, facilitates the formation of a thrombus, effectively occluding the targeted vascular structure. This intricate process is crucial for preventing further complications associated with these serious conditions.