CPT® Code 20902

The procedure described by CPT® Code 20902 involves the transplantation of bone from one anatomical site to another, primarily aimed at promoting osteogenesis, which is the formation of new bone tissue, or providing structural stability to the skeletal system. This type of bone grafting is essential in various clinical scenarios, such as filling bone defects, facilitating the union of fractured bones, or supplying material necessary for arthrodesis, which is the surgical fusion of bones. There are different types of bone grafts based on the source of the bone: an autograft is harvested from the same individual, an allograft (also known as a homograft) is obtained from a different individual, and a xenograft (or heterograft) comes from a donor of a different species. Common donor sites for these grafts include the iliac crest, tibia, fibula, greater trochanter, distal end of the radius, and the posterior portions of the spine. The procedure typically begins with the physician making an incision over the donor site, followed by the resection of surrounding muscles to access and harvest the bone graft. It is important to note that CPT® Code 20902 is specifically designated for major or large bone grafts, distinguishing it from CPT® Code 20900, which is used for minor or small grafts, such as those smaller than a dowel or button.