CPT® Code 21155

Reconstruction midface, LeFort III (extracranial), any type, requiring bone grafts (includes obtaining autografts); with LeFort I

The CPT® Code 21155 refers to a surgical procedure known as Le Fort III osteotomy, which is a type of reconstruction performed on the midface. This procedure specifically addresses deformities in the high maxillary region, which includes critical anatomical structures such as the zygoma, lateral orbital rim, and zygomatic arch. The Le Fort III osteotomy allows for the repositioning of facial bones, enabling them to be moved either anteriorly (forward) or superiorly (upward) to correct facial deformities. The procedure is performed using an extracranial approach, which involves making a significant incision that extends from one ear, across the forehead, and down to the opposite ear, allowing for adequate exposure of the facial structures. In addition to the Le Fort III procedure, this code also encompasses the performance of a Le Fort I osteotomy, which addresses deformities in the lower maxillary region. The combined approach is necessary when there are concurrent deformities in both the midface and lower maxilla. The surgical technique involves careful dissection and bone cuts, which are meticulously planned and executed to ensure proper alignment and stabilization of the facial bones post-surgery. Bone grafts, often harvested from the iliac crest, are utilized to support the reconstruction, and various fixation methods, such as wires and miniplates, are employed to secure the repositioned bones and grafts in place. This comprehensive procedure aims to restore both functional and aesthetic aspects of the facial structure.