CPT® Code 27700

Arthroplasty of the ankle, as described by CPT® Code 27700, is a surgical procedure aimed at addressing degenerative changes in the ankle joint that may arise from various conditions, including rheumatoid arthritis, osteoarthritis, and traumatic arthropathy. This procedure is particularly relevant for patients experiencing significant pain and functional limitations due to these degenerative processes. The surgical approach involves making an incision over the anterior aspect of the ankle joint, allowing the surgeon to access the joint structures directly. During the procedure, soft tissues surrounding the joint are carefully dissected to expose the joint capsule, which is then incised to facilitate inspection of the joint's internal structures. The surgeon evaluates the joint for loose bodies, bone spurs, and inflamed tissue, which are common complications associated with degenerative joint disease. In the context of CPT® Code 27700, the arthroplasty is performed without the use of an implant, distinguishing it from other types of ankle arthroplasty procedures that may involve the placement of prosthetic components. One specific technique utilized in this procedure is distraction ankle arthroplasty, where an external distraction device is employed to gently separate the joint structures, typically by about 5 mm. This minimal distraction allows the cartilage to rest, heal, and regenerate, ultimately improving joint function and reducing pain. Once the cartilage has sufficiently healed, the external distraction device is removed, marking the conclusion of this specific arthroplasty approach.