Carbuncle and furuncle of leg, except foot

This code signifies a localized, painful bacterial infection of the hair follicle and surrounding skin (furuncle) or a cluster of interconnected furuncles forming a deeper infection (carbuncle) specifically located on the leg, excluding the foot. These infections typically present as red, tender, pus-filled nodules.

Use this code when documentation clearly indicates a diagnosis of a furuncle or carbuncle affecting any part of the leg, such as the thigh, calf, or shin, but not the ankle or foot. Supporting documentation should include the specific anatomical site of the lesion and the physician's confirmed diagnosis.

• Ensure the documentation explicitly states the infection is on the leg and not the foot; otherwise, a more specific site code may be required.
• Do not use this code for cellulitis or abscesses without a clear diagnosis of furuncle or carbuncle.
• Consider an additional code for the causative organism (e.g., Staphylococcus aureus) if identified and documented.