CPT® Code 63704

A myelomeningocele is a specific type of spina bifida, which is a congenital defect resulting from the improper closure of the neural tube during early fetal development, typically within the first month. This condition is characterized by the protrusion of both the spinal cord and the protective membranes, known as meninges, through an opening in the spine. Myelomeningocele represents the most severe form of spina bifida, as it involves significant exposure of neural structures, which can lead to various neurological impairments. In some cases, a thin membrane may cover the defect, providing minimal protection to the exposed tissues. The surgical procedure associated with CPT® Code 63704 involves making an incision in the membrane covering the spinal cord and meninges, followed by the drainage of any excess cerebrospinal fluid that may be present. The next step involves suturing the dura mater, the tough outer layer of the meninges, over the spinal cord to provide a protective barrier. Subsequently, the skin is meticulously closed in layers over the protruding structures, ensuring that the spinal cord, meninges, and nerves are adequately covered. If a direct closure of the defect is not feasible due to the size or condition of the surrounding tissue, a skin flap may be created from adjacent skin on the back or buttocks. This flap is then rotated to cover the defect and secured in place with sutures. It is important to note that CPT® Code 63704 is specifically used for defects that are less than 5 cm in diameter, while CPT® Code 63706 is designated for larger defects measuring 5 cm or more.