CPT® Code 27740

Epiphyseal arrest, also known as epiphysiodesis, is a surgical procedure aimed at addressing discrepancies in bone length, particularly between the lower legs, specifically the tibia and fibula. The term "epiphysis" refers to the growth plate, which is a critical area of developing bone tissue that contributes to the lengthening of bones during childhood and adolescence. In the context of CPT® Code 27740, this procedure involves the arrest of growth at both the proximal and distal ends of the tibia and fibula. The surgical approach requires careful incisions over these areas, followed by meticulous dissection of soft tissues to safeguard surrounding blood vessels and nerves. Once the proximal and distal tibia and fibula are adequately exposed, various devices such as Blount staples, transphyseal screws, or a plate and screw system are employed to temporarily halt further bone growth. This intervention is particularly relevant for patients experiencing significant leg length discrepancies, allowing for improved alignment and function of the lower extremities. It is important to note that when epiphyseal arrest is also performed on the distal femur in conjunction with the tibia and fibula, CPT® Code 27742 should be utilized instead.