Vestibular Autorotation Test (VAT)

Aetna considers the vestibular autorotation test (VAT) experimental/investigational and does not cover it for diagnosing vestibular disorders, vestibular migraine, or any other indication. This exclusion is due to insufficient evidence of sensitivity, specificity, reproducibility, and clinical utility and known limitations (head-sensor slippage at high frequencies, cervico-ocular reflex confounding, non-comparable test variants, and poor test-retest reliability).

"Additional limitations of the VAT include slippage of the head velocity sensor at high frequencies and accelerations during testing."

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