CPT® Code 21183

Reconstruction of orbital walls, rims, forehead, nasoethmoid complex following intra- and extracranial excision of benign tumor of cranial bone (eg, fibrous dysplasia), with multiple autografts (includes obtaining grafts); total area of bone grafting greater than 40 sq cm but less than 80 sq cm

The procedure described by CPT® Code 21183 involves the reconstruction of the orbital walls, rims, forehead, and nasoethmoid complex following the excision of benign tumors from the cranial bone, such as fibrous dysplasia. This complex surgical intervention is performed under general anesthesia and requires the use of multiple autografts, which are bone grafts harvested from the patient's own body. The total area of bone grafting in this procedure is specifically greater than 40 square centimeters but less than 80 square centimeters. The surgical approach typically includes creating incisions in various locations, such as the eyelid and scalp, to provide adequate access to the surgical site. The excision of the tumors is carried out using both intra- and extracranial techniques, ensuring that the affected bone structures are carefully removed. Following tumor excision, the bones are meticulously fractured and repositioned to restore their proper anatomical alignment. The harvested bone grafts are then inserted into the designated areas to augment and stabilize the sites from which the tumors have been excised. To maintain the structural integrity and shape of the facial bones during the healing process, fixation devices such as wires, plates, and screws are employed. Finally, the incisions made during the procedure are closed in layers to promote optimal healing and minimize scarring.