Acute myringitis, unspecified ear

This code describes an acute inflammation of the tympanic membrane (eardrum) without further specification of the affected ear. It indicates a sudden onset of irritation or infection limited to the eardrum itself, often presenting with pain, redness, and sometimes blistering. This condition is distinct from otitis media, which involves the middle ear.

Use this code when the provider's documentation clearly states a diagnosis of acute myringitis and does not specify laterality (left, right, or bilateral). Supporting documentation would include notes describing an inflamed or blistered eardrum upon otoscopic examination, without evidence of middle ear effusion or infection.

• Do not use this code if the documentation specifies the affected ear; instead, use H73.001 (right), H73.002 (left), or H73.003 (bilateral).
• Differentiate from otitis media (H65-H67 series); myringitis is inflammation of the eardrum only, while otitis media involves the middle ear.
• Ensure the "acute" nature is documented; chronic myringitis would be coded differently.