Furuncle of left foot

This code describes a localized, painful, bacterial infection originating in a hair follicle of the left foot, characterized by a central core of pus and necrotic tissue. It is a type of skin abscess, specifically a boil, affecting the foot on the patient's left side.

Apply this code when documentation clearly indicates a furuncle (boil) located on the left foot. Supporting documentation should specify the anatomical site and the nature of the lesion as an acute, localized pyogenic infection of a hair follicle.

• Differentiate from carbuncle (multiple interconnected furuncles) or other types of skin abscesses.
• Ensure laterality is explicitly documented as "left foot"; if unspecified, query the provider.
• Code any associated cellulitis or lymphangitis separately if documented.