Furuncle of umbilicus

This code represents a localized, painful bacterial infection of a hair follicle originating in the umbilical region, commonly known as a boil. It typically presents as a red, tender nodule that may develop a pustular head and eventually drain pus.

Apply this code when documentation clearly indicates a furuncle (boil) specifically located at the umbilicus. Supporting documentation should include a physical exam noting the characteristic lesion and its precise anatomical location.

• Ensure the documentation specifies "furuncle" or "boil" and not a carbuncle or abscess, which are distinct conditions.
• Verify the exact anatomical site is the umbilicus; other abdominal wall furuncles would be coded differently.
• Do not use this code if the infection is a cellulitis or abscess without a clearly defined furuncle.