Furuncle of left lower limb

This code represents a localized, painful bacterial infection of a hair follicle and surrounding skin, commonly known as a boil, occurring specifically on the left lower limb. The infection typically presents as a red, tender nodule that eventually forms a pustule and may drain pus.

Use this code when documentation clearly indicates a furuncle (boil) located on the patient's left leg, ankle, or foot. Supporting documentation should specify the diagnosis of a furuncle and its precise anatomical location on the left lower extremity.

• Ensure the documentation specifies "furuncle" and not other skin infections like cellulitis or abscess, which have different codes.
• Verify the laterality is explicitly stated as "left lower limb" to avoid using an unspecified or right-sided code.
• Consider additional codes for any associated complications, such as cellulitis or lymphangitis, if documented.