CPT® Code 21356

The CPT® Code 21356 refers to the open treatment of a depressed zygomatic arch fracture, commonly utilizing the Gillies approach. A depressed zygomatic arch fracture occurs when the zygomatic arch, a bony structure that forms the prominence of the cheek, is pushed inward due to trauma. This type of fracture can lead to aesthetic concerns and functional impairments, such as difficulties with jaw movement or vision, depending on the severity and displacement of the fracture. The Gillies approach is a well-established surgical technique that involves making an incision in the temporal region, just above the hairline, allowing the surgeon access to the zygomatic arch. During the procedure, specialized instruments are inserted beneath the muscle fascia to carefully manipulate the fractured bone back into its correct anatomical position. Once the fracture is adequately reduced, the instruments are removed, and the incisions are meticulously closed to promote optimal healing and minimize scarring. This procedure is essential for restoring both the structural integrity and aesthetic appearance of the facial skeleton.