Postauricular fistula, right ear

This code signifies an abnormal, chronic tract or opening located behind the right ear that connects to an underlying structure, often resulting in persistent drainage or infection. This fistula is typically a congenital anomaly, a complication of otitis media, or a sequela of mastoid surgery.

Use this code when documentation clearly indicates a postauricular fistula affecting the right ear. This diagnosis is supported by physician notes detailing the presence, location, and laterality of the fistula, often with associated symptoms like discharge, pain, or inflammation. It is appropriate for both initial diagnosis and subsequent encounters for management of the condition.

• Ensure documentation specifies "right ear" to support laterality.
• Distinguish from preauricular fistulas, which have different code assignments.
• Code any associated infections or complications, such as cellulitis or abscess, separately.