Furuncle of neck

This code signifies a localized, painful bacterial infection of a hair follicle and surrounding skin on the neck, commonly known as a boil. It presents as a tender, erythematous nodule that may progress to form a pustule with a central core of necrotic tissue.

Apply this code when documentation clearly indicates a furuncle (boil) located specifically on the neck. This diagnosis is typically supported by physical examination findings describing a localized inflammatory lesion consistent with a furuncle in the cervical region.

• Differentiate from carbuncles (L02.21-L02.23), which are deeper and involve multiple hair follicles.
• Ensure the documentation specifies "neck" as the anatomical site; otherwise, an unspecified site code may be necessary.
• Do not use for cellulitis or abscesses without a clear furuncular origin.