CPT® Code 24126

The CPT® Code 24126 refers to the excision or curettage of a bone cyst or benign tumor located in the head or neck of the radius or olecranon process, specifically when this procedure is performed with the use of an allograft. A bone cyst is defined as a fluid-filled space within the bone, which can vary in type. The unicameral or simple bone cyst is the most common, characterized as a benign lesion. In contrast, an aneurysmal bone cyst is less common and consists of vascular tissue surrounding a blood-filled cystic lesion. Additionally, there are various types of benign bone tumors, including giant cell tumors, chondromyxoid fibromas, and enchondromas. The procedure begins with an incision made over the lesion site, followed by dissection of the soft tissues to expose the lesion. If a cystic lesion is identified, the bone is incised to create a window, allowing for the aspiration of fluid, which is then sent for laboratory analysis. The lining of the cystic cavity is removed through curettage, or the benign tumor may be excised along with a margin of healthy bone. In this specific code, after the lesion is addressed, the resulting defect is filled with donor bone (allograft), which is critical for the healing process and structural integrity of the bone.