CPT® Code 27685

The procedure described by CPT® Code 27685 involves the surgical lengthening or shortening of a single tendon in the leg or ankle, classified as a separate procedure. This intervention is typically indicated for patients presenting with flexion or extension deformities of the ankle, which may arise from various conditions, including the late effects of injuries or chronic diseases such as severe rheumatoid arthritis or osteoarthritis. The surgical approach begins with a skin incision over the targeted tendon, followed by careful dissection of the surrounding soft tissues to expose the tendon. For lengthening, a Z-shaped incision is created in the tendon, allowing the tendon fibers to separate and elongate as the ankle is flexed or extended. Conversely, if shortening is required, the tendon is divided, and the ends are overlapped and sutured together. Post-surgery, the ankle is immobilized using a splint or cast to ensure proper healing and maintain the desired position of the tendon. This procedure is crucial for restoring function and alleviating deformities in the ankle region.