CPT® Code 29891

Surgical arthroscopy of the ankle, as described by CPT® Code 29891, involves a minimally invasive procedure aimed at addressing osteochondral defects located on the talus and/or tibia. An osteochondral defect refers to a specific area of damage within a joint where both the cartilage and the underlying bone have been compromised. These defects are particularly prevalent in the ankle joint, often affecting the talus or tibia, which are critical components of the ankle's structure and function. The procedure is performed using an arthroscope, a specialized instrument that allows for visual inspection and intervention within the joint space. The surgical approach typically involves positioning the leg on an L-shaped bar to provide optimal access and stability, while the knee is flexed, allowing the lower leg to move freely. The ankle joint is then distracted to facilitate better visualization and access to the defect. Through a series of carefully executed steps, including the creation of portals for instrument access, the surgeon can effectively remove damaged tissue and prepare the site for healing. This procedure not only aims to alleviate pain and restore function but also promotes the regeneration of healthy bone and cartilage tissue through techniques such as drilling the defect to stimulate healing factors.