CPT® Code 92532

A positional nystagmus test is a diagnostic procedure used to evaluate the presence of nystagmus, which is characterized by rapid, involuntary movements of the eyes. This test is particularly important in identifying vestibular disorders that manifest as vertigo, a sensation of spinning or dizziness, and balance disturbances. These disturbances can lead to difficulties in maintaining balance, standing upright, or walking with a normal gait. The test specifically assesses how certain head or body movements can trigger nystagmus, which is often indicative of dysfunction within the semicircular canals of the middle ear. During the procedure, the physician may observe the patient's eye movements directly or utilize Frenzel optical goggles to enhance visibility of the eye movements. Standard positions for testing include various orientations such as head hanging forward, supine, and lateral positions, among others, which are designed to provoke symptoms of dizziness. The physician meticulously observes and records any abnormal eye movements that occur during these positions, followed by a thorough analysis and interpretation of the test results to aid in diagnosing the underlying vestibular condition.