CPT® Code 29887

Arthroscopy of the knee is a minimally invasive surgical procedure that allows for the examination and treatment of various knee joint conditions. Specifically, CPT® Code 29887 refers to the surgical arthroscopy performed to address an intact osteochondritis dissecans lesion through a technique known as drilling, accompanied by internal fixation. Osteochondritis dissecans is a pathological condition characterized by the separation of a fragment of bone and the overlying cartilage from the underlying bone, typically occurring in the knee joint. This condition can lead to the formation of loose bodies within the joint, which may cause pain, swelling, and restricted movement. The procedure involves making small incisions, or portals, on the medial and lateral sides of the knee to introduce an arthroscope, a specialized instrument equipped with a camera that provides a visual assessment of the joint. The surgeon can then flush the joint with saline to clear debris and examine the area for any signs of disease, injury, or infection. The drilling technique is employed to create small tunnels through the articular cartilage and into the underlying bone, facilitating the infiltration of blood vessels that promote healing and the replacement of necrotic bone with viable tissue. In cases where the osteochondritis dissecans lesion is extensive or chronic, bone grafts may be utilized to fill the drilled holes, enhancing the stability and healing of the affected area. Internal fixation may also be applied to secure the dissecans fragment, ensuring proper alignment and stabilization during the recovery process.