Acute chemical otitis externa, left ear

This code signifies an acute inflammatory condition of the external ear canal on the left side, specifically caused by exposure to a chemical irritant. This irritation leads to symptoms such as pain, redness, swelling, and discharge in the affected ear.

Use this code when documentation clearly indicates an acute otitis externa in the left ear resulting from chemical exposure, such as from hair dye, cleaning solutions, or other irritants. Supporting documentation should specify the chemical etiology and the affected ear.

• Ensure the documentation explicitly states "chemical" as the cause of the otitis externa.
• Verify laterality; this code is specific to the left ear.
• Distinguish from other forms of acute otitis externa (e.g., bacterial, fungal) which have different codes.