CPT® Code 63172

An intramedullary cyst or syrinx is a rare type of lesion characterized by a fluid-filled cavity located within the spinal cord. This condition can lead to various neurological symptoms depending on its size and location. The procedure described by CPT® Code 63172 involves a laminectomy, which is a surgical operation that entails the removal of a portion of the lamina, the bony arch of the vertebra that covers the spinal canal. The surgery is performed through an incision in the skin over the cervical, thoracic, or thoracolumbar region, where the cyst or syrinx is situated. The incision is extended down to the spinous processes, allowing access to the underlying structures. During the procedure, muscles are retracted away from the lamina and facet joint to provide a clear view of the spinal canal. A bone drill is then utilized to remove part or all of the lamina, which exposes the spinal cord. Once the spinal cord is visible, the cyst or syrinx is evaluated, and the lesion is incised and drained. A drain is subsequently placed within the lesion to facilitate the removal of fluid. Notably, in this specific procedure, the drain is tunneled and secured to terminate in the subarachnoid space, which is the area between the arachnoid membrane and the pia mater that envelops the spinal cord. This approach is crucial for managing the fluid accumulation associated with the cyst or syrinx effectively.