CPT® Code 26863

Add-On Code

Arthrodesis, interphalangeal joint, with or without internal fixation; with autograft (includes obtaining graft), each additional joint (List separately in addition to code for primary procedure)

Arthrodesis of an interphalangeal (IP) joint is a surgical procedure aimed at fusing the bones of the joint to alleviate pain and restore stability, particularly in cases of arthritis or joint instability. The procedure involves making an incision over the affected IP joint, allowing the surgeon to access the joint capsule. Once the joint is exposed, the surgeon inspects the joint surfaces and excises the articular cartilage from the phalangeal bones to prepare them for fusion. The surfaces of the bones are then smoothed and reshaped using a bur, ensuring they can be held in the desired position for successful fusion. In some cases, internal fixation devices such as pins or wires may be employed to maintain the joint in the correct alignment until the fusion process is complete. After the procedure, the soft tissues are meticulously repaired in layers, and a cast or splint is applied to support the joint during the healing process. This code, CPT® 26863, specifically refers to the arthrodesis of each additional IP joint when performed with an autograft, which is a bone graft taken from the patient's own body, typically harvested from the iliac crest. The use of an autograft enhances the likelihood of successful fusion by providing the necessary biological material to facilitate healing and integration of the joint surfaces.