CPT® Code 28106

Excision or curettage of bone cyst or benign tumor, tarsal or metatarsal, except talus or calcaneus; with iliac or other autograft (includes obtaining graft)

The procedure described by CPT® Code 28106 involves 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 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, there are several types of benign bone tumors, including 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 aspiration of the fluid for laboratory analysis. The lining of the cystic cavity is then removed using a curette. In cases where a benign tumor is present, the lesion is excised along with a margin of healthy bone. Following the excision or curettage, the procedure involves obtaining an autograft, typically from the iliac crest, which is then packed into the defect created in the tarsal or metatarsal bone. This comprehensive approach ensures the removal of the lesion while promoting healing through the use of the patient's own bone tissue.