CPT® Code 20934

Add-On Code

Allograft, includes templating, cutting, placement and internal fixation, when performed; intercalary, complete (ie, cylindrical) (List separately in addition to code for primary procedure)

The CPT® Code 20934 refers to the procedure of inserting an allograft, which is a graft derived from a donor (typically cadaveric tissue), to reconstruct a bone or soft tissue deficit. This procedure is particularly relevant in cases where there is a need to address significant structural loss due to various medical conditions such as tumors, osteochondral cysts, posttraumatic or degenerative arthritis, traumatic injuries, or avascular necrosis. The primary goal of utilizing an allograft in these scenarios is to prevent limb amputation and to preserve the functionality of the limb. The allograft used in this procedure is often composed of bone, cartilage, or other tissues that are anatomically similar to the tissue that has been excised from the patient. During the procedure, the surgeon accesses the affected area, resects the damaged or diseased tissue down to viable healthy bone or tissue, and then prepares the allograft. The allograft is sculpted to match the contours of the removed tissue, using the excised bone or tissue as a template. Once shaped, the allograft is inserted into the prepared site and secured in place using various fixation methods, which may include rods, cerclage wires, intramedullary nails, plates, or screws. This procedure is categorized as intercalary, complete (cylindrical), meaning that a section of the diaphyseal portion of the bone is entirely removed, and the allograft serves to bridge the gap between the remaining ends of the native bone. It is important to note that this code is used in conjunction with the primary procedure code for radical resection of the diseased bone or joint or for the removal of an implant.