Cauliflower ear

This code describes an acquired deformity of the auricle, characterized by thickening and distortion of the cartilage, often resulting in a lumpy or cauliflower-like appearance. It typically arises from blunt trauma, leading to perichondrial hematoma and subsequent fibrosis and cartilage necrosis.

Use this code when documentation clearly indicates an acquired, permanent deformity of the external ear consistent with cauliflower ear. This often occurs in individuals involved in contact sports or those with a history of repeated ear trauma.

• Ensure documentation specifies "acquired" as opposed to a congenital ear malformation.
• Do not confuse with acute perichondrial hematoma, which is a precursor but not the chronic deformity itself.
• Consider an external cause code (E-code) if the trauma leading to the deformity is documented and relevant for reporting.