CPT® Code 27065

Excision of bone cyst or benign tumor, wing of ilium, symphysis pubis, or greater trochanter of femur; superficial, includes autograft, when performed

The CPT® Code 27065 refers to the excision of a bone cyst or benign tumor located in specific areas of the pelvis or proximal femur, namely the wing of the ilium, symphysis pubis, or greater trochanter of the femur. A bone cyst is defined as a fluid-filled space within the bone, which can be benign in nature. Among the various types of bone cysts, the unicameral or simple bone cyst is the most common, while the aneurysmal bone cyst, characterized by vascular tissue surrounding a blood-filled cystic lesion, is less frequently encountered. Additionally, benign bone tumors can include giant cell tumors, chondromyxoid fibromas, and enchondromas. The procedure described by CPT® Code 27065 involves the surgical removal of a superficial bone cyst or benign tumor. This is achieved through an incision made over the lesion, followed by dissection of the soft tissues to expose the affected area. If a cystic lesion is identified, the surgeon creates a bone window to access the cyst, aspirating the fluid for laboratory analysis. The lining of the cystic cavity is then meticulously removed using a curette. In cases where benign tumors are present, the excision involves removing the tumor along with a margin of healthy bone. The resulting defect may either be left open or filled with a bone autograft, which is harvested from the local healthy bone through the same incision. This procedure is essential for addressing superficial bone lesions while ensuring the integrity of surrounding structures.