Acute and subacute allergic otitis media (serous), left ear

This code signifies an acute or subacute inflammatory condition of the middle ear, specifically the left ear, caused by an allergic reaction. The inflammation results in the accumulation of fluid, which can be mucoid (thick, sticky), sanguinous (bloody), or serous (thin, watery).

Use this code when documentation clearly indicates an allergic etiology for acute or subacute otitis media affecting the left ear. This typically involves a patient presenting with ear pain, hearing loss, or fullness, and a history or clinical findings suggestive of an allergic trigger. The physician's notes should specify the laterality and the allergic nature of the condition.

• Ensure the documentation explicitly states "allergic" as the cause of the otitis media.
• Verify the laterality; this code is specific to the left ear.
• Distinguish from non-allergic forms of otitis media, such as suppurative or serous otitis media without an allergic component.