Furuncle of buttock

This code represents a localized, painful, pus-filled inflammatory lesion of a hair follicle and surrounding tissue, specifically located on the buttock. It is a type of skin abscess caused by bacterial infection, typically Staphylococcus aureus.

Apply this code when documentation clearly indicates a furuncle (boil) present on the patient's buttock. This diagnosis is often supported by physical examination findings of a tender, erythematous nodule with a central pustule or necrotic core.

• Differentiate from other skin infections like cellulitis or carbuncles; a furuncle is a single infected hair follicle.
• Do not use for abscesses of the buttock not specifically identified as a furuncle (e.g., use L02.31 for cutaneous abscess of buttock).
• Consider an additional code for the causative organism (e.g., B95.61 for MRSA) if identified and documented.