Chronic allergic otitis media, left ear

This code signifies a persistent, inflammation of the middle ear in the left ear, specifically triggered by an allergic reaction. It indicates a long-standing or recurrent condition where the body's immune response to an allergen causes fluid buildup and inflammation behind the eardrum.

Use this code when documentation clearly states a diagnosis of chronic allergic otitis media affecting the left ear. This typically applies to patients experiencing recurrent or persistent middle ear effusions and inflammation with a confirmed allergic etiology. Supporting documentation should include physician notes detailing the chronicity, laterality, and allergic component of the otitis media.

• Ensure the documentation specifies "chronic" and "allergic" to differentiate from acute or non-allergic forms.
• Verify laterality; this code is specific to the left ear. Use H65.411 for the right ear or H65.413 for bilateral involvement.
• Look for supporting allergy testing results or a history of allergic reactions contributing to the otitis media.