CPT® Code 61640

Balloon dilatation of intracranial vasospasm, as described by CPT® Code 61640, is a specialized endovascular procedure aimed at alleviating vasospasm, which is the constriction of blood vessels due to the smooth muscle lining's contraction. This condition often arises following a subarachnoid hemorrhage, where blood leaks into the space surrounding the brain, leading to changes in the vessel's intima. These changes can result in narrowing and rigidity of the vessel wall, impeding blood flow and potentially causing serious complications. The procedure involves a series of carefully orchestrated steps, beginning with the preparation of the access site, followed by the insertion of a catheter into the affected blood vessel. Through this catheter, a balloon is introduced to the site of the vasospasm. Once in place, the balloon is inflated to dilate the narrowed artery, thereby restoring normal blood flow. This intervention is critical in managing the effects of vasospasm and preventing further neurological damage. The procedure is performed under fluoroscopic guidance to ensure precision and safety throughout the process.