CPT® Code 27742

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 influences the length and shape of the bones as a child grows. In the context of CPT® Code 27742, this procedure involves a combined approach where epiphyseal arrest is performed not only on the proximal and distal aspects of the tibia and fibula but also includes the distal femur. The surgical technique requires careful incision and dissection of soft tissues to expose the bones while safeguarding surrounding blood vessels and nerves. The use of devices such as Blount staples, transphyseal screws, or plates and screws is integral to the procedure, as these are placed in the epiphyses to temporarily halt further bone growth, thereby correcting the length discrepancy. This procedure is particularly relevant in pediatric orthopedics, where growth-related issues are common, and it is essential for achieving proper limb alignment and function as the child matures.