CPT® Code 24120

The CPT® Code 24120 refers to the excision or curettage of a bone cyst or benign tumor located in the head or neck of the radius or the olecranon process. A bone cyst is defined as a fluid-filled space within the bone, which can vary in type. The most common type is the unicameral or simple bone cyst, recognized as a benign lesion. Another type, though less common, is the aneurysmal bone cyst, characterized by vascular tissue surrounding a blood-filled cystic lesion. Additionally, there are various benign bone tumors, including giant cell tumors, chondromyxoid fibromas, and enchondromas. The procedure described by CPT® Code 24120 involves making an incision in the skin over the lesion's 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 access to the cyst. The fluid within the cyst is aspirated for laboratory analysis. A curette is then utilized to remove the lining of the cystic cavity completely. In cases where a benign tumor is present, the procedure may involve excising the tumor along with a margin of surrounding healthy bone. This code is essential for accurately documenting the surgical intervention performed on these specific bone lesions in the upper extremity.