Furuncle of head [any part, except face]

This code signifies a localized, painful bacterial infection of a hair follicle and surrounding skin, specifically located on the head but excluding the face. It presents as a tender, red nodule that typically develops a pustular center.

Apply this code when documentation clearly indicates a furuncle (boil) on any part of the scalp, neck, or posterior head. This code is appropriate when the physician's notes specify the lesion's location as "scalp," "occiput," or "nape of neck."

• Differentiate from carbuncles (L02.822), which are deeper and involve multiple hair follicles.
• Ensure the documentation explicitly excludes facial involvement; otherwise, a facial furuncle code (e.g., L02.02) would be more appropriate.
• Code any associated cellulitis or abscess separately if documented as distinct conditions.