CPT® Code 27355

The CPT® Code 27355 refers to the excision or curettage of a bone cyst or benign tumor located in the femur, which is the long bone in the thigh. A bone cyst is defined as a fluid-filled space within the bone, and it can vary in type. One common type is the unicameral or simple bone cyst, which is generally considered a benign lesion. Another type, the aneurysmal bone cyst, is characterized by vascular tissue surrounding a blood-filled cystic lesion. In addition to cysts, there are various benign bone tumors, such as giant cell tumors, chondromyxoid fibromas, and enchondromas, which may also necessitate surgical intervention. The procedure associated with CPT® Code 27355 involves making an incision over the lesion site on the femoral shaft or distal femur, followed by dissection of the soft tissues to expose the femur. If a cystic lesion is identified, the surgeon incises the bone to create a window, allowing access to the cyst. The fluid within the cyst is aspirated for laboratory analysis. A curette is then used to remove the lining of the cystic cavity completely. Alternatively, if a benign tumor is present, the lesion is excised along with a margin of surrounding healthy bone. This procedure is critical for addressing both cystic lesions and benign tumors in the femur, ensuring that the affected area is treated effectively while minimizing the risk of recurrence.