Labyrinthitis, unspecified ear

This code signifies inflammation of the labyrinth, the intricate system of fluid-filled canals within the inner ear responsible for balance and hearing, when the specific ear affected is not documented. It typically presents with sudden onset vertigo, nausea, vomiting, and sometimes hearing loss or tinnitus. The inflammation can be viral, bacterial, or autoimmune in origin.

Assign this code when the medical record clearly indicates a diagnosis of labyrinthitis, but the physician's documentation does not specify whether the condition affects the left, right, or both ears. This code is appropriate when the laterality is truly unknown or unstated.

• Avoid using this code if the laterality (left, right, or bilateral) is documented; instead, use the more specific codes for unilateral or bilateral labyrinthitis.
• Ensure documentation supports the diagnosis of labyrinthitis, such as symptoms of vertigo, nystagmus, and inner ear dysfunction.
• Do not confuse with vestibular neuronitis (H81.2-), which primarily affects the vestibular nerve without significant hearing loss.