CPT® Code 22846

Add-On Code

An anterior instrumentation procedure involves the surgical placement of devices to stabilize the spine, specifically targeting 4 to 7 vertebral segments. This procedure is typically performed in conjunction with an arthrodesis, commonly known as spinal fusion, which aims to correct deformities or instabilities within the spinal column. The instrumentation is applied from the anterior (front) aspect of the body, which may necessitate incisions in various locations depending on the specific vertebral levels being addressed. These locations can include the front of the neck, the thorax, or the abdomen. In some cases, an anterolateral approach may be utilized, allowing access from the side of the body. During the procedure, the surgeon carefully retracts overlying muscles and manages blood vessels to ensure a clear view of the vertebrae. The vertebrae are then accessed and prepared for instrumentation, which may involve stripping away surrounding muscles. In certain instances, a discectomy, which is the removal of intervertebral discs, may also be performed as part of the procedure. The instrumentation itself typically consists of a single or dual rod that is securely attached to the targeted spinal segments using various fixation devices such as hooks, screws, or intervertebral cage devices. These components may be further stabilized with bone grafts, which are packed tightly around the instrumentation to promote fusion and enhance stability. It is important to note that CPT® Code 22846 is specifically designated for procedures involving 4 to 7 vertebral segments, distinguishing it from codes for fewer or greater segments.