CPT® Code 21193

The procedure described by CPT® Code 21193 involves the reconstruction of the mandibular rami, which are the vertical portions of the lower jawbone. This reconstruction is achieved through various osteotomy techniques, specifically horizontal, vertical, C, or L osteotomies. These surgical methods are employed to correct deformities of the mandible, which may arise from congenital issues, trauma, or other pathological conditions. The procedure is performed under general anesthesia to ensure the patient is completely unconscious and free from pain during the operation. The surgeon makes incisions in the mandible, which may include an intraoral approach, allowing access to the bone without external scarring. Once the mandibular rami are exposed, specialized instruments such as osteotomes, saws, and burs are utilized to create precise cuts in the bone. This manipulation allows the surgeon to separate the mandible into distinct parts, which can then be repositioned to achieve the desired anatomical configuration. Fixation of the newly positioned bone segments is accomplished using plates, screws, and wires, ensuring stability during the healing process. In cases where a bone graft is not required, the procedure is coded as 21193. However, if a bone graft is necessary, which involves harvesting bone from the patient's hip, rib, or skull to augment the surgical site, the procedure would be coded as 21194. The use of an antibiotic solution is standard practice to minimize the risk of infection, and the incisions are subsequently closed. Additionally, intermaxillary fixation may be employed to stabilize the jaw during the recovery phase.