CPT® Code 63290

The procedure described by CPT® Code 63290 involves a laminectomy performed specifically for the biopsy or excision of an intraspinal neoplasm that presents as a combined extradural-intradural lesion. An intraspinal neoplasm refers to a tumor located within the spinal canal, which can be classified as benign, malignant, or of uncertain behavior. In this context, the tumor is situated outside the dura mater, the protective membrane surrounding the spinal cord, but extends into the dura itself. The laminectomy procedure entails making an incision in the skin over the affected area of the spine, which may be in the cervical, thoracic, lumbar, or sacral regions, depending on the tumor's location. The surgical approach requires careful dissection to expose the lamina, the bony structure of the vertebrae, and the spinal cord. The surgeon utilizes a bone drill to remove part or all of the lamina to gain access to the tumor. Once the tumor is located, it is evaluated to confirm its extent and relationship to the dura mater. A biopsy may be performed to obtain a tissue sample for pathological examination. If the tumor is deemed excisable, the surgeon meticulously dissects it from surrounding tissues, often using an operating microscope for precision. After complete removal, the dura is closed with sutures or a dural patch graft to ensure proper healing and protection of the spinal cord. This procedure is critical for diagnosing and treating spinal tumors, allowing for both evaluation and potential removal of neoplastic tissue.