CPT® Code 28108

The procedure described by CPT® Code 28108 involves the excision or curettage of a bone cyst or benign tumor located in the phalanges of the foot. A bone cyst is defined as a fluid-filled space within the bone, which can vary in type and presentation. The unicameral or simple bone cyst is the most common form, characterized as a benign lesion that typically does not pose significant health risks. In contrast, an aneurysmal bone cyst is less common and is composed of vascular tissue that encases a blood-filled cystic lesion. Additionally, there are various types of benign bone tumors that may be encountered, including giant cell tumors, chondromyxoid fibromas, and enchondromas. During the procedure, an incision is made over the affected area of the proximal, middle, or distal phalanx of one of the toes. The soft tissues surrounding the lesion are carefully dissected to expose the underlying bone. 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 and sent for laboratory analysis, which is reportable separately. Following this, a curette is utilized to thoroughly remove the lining of the cystic cavity through the created bone window. In cases where a benign tumor is present, the approach may differ slightly; the lesion is exposed similarly, and the physician excises the tumor along with a margin of healthy bone to ensure complete removal. This procedure is essential for addressing bone cysts and benign tumors in the foot, promoting recovery and alleviating any associated symptoms.