Vestibular neuronitis, left ear

This code describes inflammation of the vestibular nerve in the left ear, leading to sudden onset of severe vertigo, nausea, vomiting, and imbalance. It is typically caused by a viral infection and does not involve hearing loss.

Apply this code when documentation specifies a diagnosis of vestibular neuronitis affecting the left ear. Supporting clinical notes should detail acute vertigo, nystagmus, and postural instability, with an absence of auditory symptoms.

• Ensure laterality is clearly documented as "left ear" to support this specific code.
• Differentiate from labyrinthitis (H83.0-) which involves both vestibular and cochlear inflammation, causing hearing loss.
• Do not confuse with benign paroxysmal positional vertigo (H81.1-) which has different triggers and symptom patterns.