Hematoma of pinna, right ear

This code signifies a localized collection of blood within the tissues of the external ear, specifically the right auricle. This hematoma typically results from trauma, such as a direct blow or shear injury, leading to separation of the perichondrium from the cartilage and subsequent blood accumulation. Untreated, it can lead to "cauliflower ear" deformity.

Apply this code when documentation clearly indicates a hematoma affecting the right pinna. This diagnosis is supported by physical examination findings of swelling, ecchymosis, and tenderness of the right external ear, often with a history of recent trauma. Use this code for both initial and subsequent encounters related to the acute hematoma.

• Ensure laterality is explicitly documented as "right ear" to support this specific code.
• Distinguish from other ear injuries like contusions (S00.411A) or lacerations (S01.311A) which involve different tissue damage.
• Code any underlying cause of trauma, such as assault or sports injury, as an external cause code (e.g., W50.0XXA) in addition to this diagnosis.