CPT® Code 23145

The procedure described by CPT® Code 23145 involves the excision or curettage of a bone cyst or benign tumor located in the clavicle or scapula, accompanied by the use of an autograft. A bone cyst is defined as a fluid-filled cavity within the bone, which can vary in type. The unicameral or simple bone cyst is a common benign lesion, while the aneurysmal bone cyst is characterized by vascular tissue surrounding a blood-filled cystic lesion. Additionally, benign bone tumors can include various forms such as giant cell tumors, chondromyxoid fibromas, and enchondromas. The procedure begins with an incision 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 for laboratory analysis. The lining of the cystic cavity is then removed through curettage. In cases of benign tumors, the lesion is excised along with a margin of healthy bone. Following the excision or curettage, the procedure includes obtaining a healthy bone graft, either from the local area or a separate site, such as the iliac crest, which is then packed into the defect created in the proximal humerus. This comprehensive approach ensures the effective removal of the lesion while promoting healing through the use of the autograft.