Disorders of left acoustic nerve

This code signifies any pathological condition affecting the left acoustic (vestibulocochlear) nerve, which is responsible for transmitting auditory and balance information from the inner ear to the brain. These disorders can manifest as hearing loss, tinnitus, vertigo, or balance disturbances specifically localized to the left side.

Apply this code when documentation clearly indicates a diagnosed disorder of the left eighth cranial nerve. This includes conditions like acoustic neuroma (when laterality is specified as left), vestibular neuritis affecting the left side, or other neuropathies impacting the left acoustic nerve. Supporting documentation should include physician notes detailing diagnostic findings, such as audiometry, ENG/VNG results, or imaging studies confirming left-sided involvement.

• Ensure laterality is explicitly documented as "left" to avoid unspecified or bilateral coding.
• Do not confuse with disorders of the inner ear (H80-H83) unless the acoustic nerve itself is the primary affected structure.
• Sequence this code after the primary diagnosis if the acoustic nerve disorder is a manifestation or complication of another underlying condition.