Hematoma of pinna, left ear

This code signifies a localized collection of blood, typically clotted, within the tissue of the outer ear (pinna) on the left side. It usually results from trauma, such as a direct blow or shearing injury, causing separation of the perichondrium from the cartilage and subsequent hemorrhage.

Apply this code when documentation clearly indicates a hematoma affecting the left auricle. This often presents as a tender, fluctuant swelling of the external ear following an injury. Supporting documentation should include the location (left ear) and the nature of the lesion (hematoma).

• Ensure laterality is explicitly documented as "left ear" to support this specific code.
• Distinguish from seroma, which is a collection of serous fluid, not blood.
• Consider an external cause code (e.g., W50-W60 series) if the cause of the trauma is known and documented.