CPT® Code 28107

The CPT® Code 28107 refers to the surgical procedure involving the excision or curettage of a bone cyst or benign tumor located in the tarsal or metatarsal bones, excluding the talus or calcaneus. A bone cyst is defined as a fluid-filled cavity 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, the aneurysmal bone cyst, is characterized by vascular tissue surrounding a blood-filled cystic lesion. Additionally, there are various benign bone tumors, such as giant cell tumors, chondromyxoid fibromas, and enchondromas, which may also necessitate surgical intervention. 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, a window is created in the bone to access the cyst, allowing for fluid aspiration and laboratory analysis. The lining of the cystic cavity is then removed through curettage. In cases where benign tumors are present, the lesion is excised along with a margin of healthy bone. Following the excision or curettage, the resulting defect is filled with donor bone, known as allograft, to promote healing and structural integrity of the affected area.