Swimmer's ear, left ear

This code signifies an infection of the external auditory canal, specifically in the left ear, often caused by water exposure. It is characterized by inflammation, pain, itching, and sometimes discharge, commonly known as otitis externa.

Use this code when documentation clearly indicates a diagnosis of otitis externa affecting the left ear, particularly when the etiology is linked to water exposure (e.g., swimming). Supporting documentation should include physician notes detailing the laterality and clinical presentation consistent with an external ear infection.

• Ensure the documentation specifies "left ear" to support this laterality-specific code.
• Do not confuse with middle ear infections (otitis media), which have different code categories.
• Consider any associated symptoms or causative factors (e.g., bacterial infection) for additional coding if documented.