Policy 2.01.27 sets the indications considered medically appropriate for visual-evoked, somatosensory-evoked and auditory-evoked potentials, with a current effective date of May 21, 2026. Intra-operative neurophysiologic monitoring is considered medically appropriate during high-risk thyroid or parathyroid surgery, or during spinal, intracranial or vascular procedures, and all other indications for intra-operative neurophysiologic monitoring are considered not medically necessary. Vestibular evoked myogenic potentials, intra-operative monitoring of visual-evoked potentials, visual-evoked potential testing for glaucoma, and transcranial magnetic stimulation to elicit motor-evoked potentials are considered investigational.
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01Billing team: Evoked potential services are considered medically appropriate only for the indications listed in the policy, such as diagnosing and monitoring multiple sclerosis, evaluating suspected brain death, and localizing a neurologic deficit that is not explained by lesions on CT or MRI.
02Intra-operative neurophysiologic monitoring is considered medically appropriate during high-risk thyroid or parathyroid surgery, or during spinal, intracranial or vascular procedures, and other indications are considered not medically necessary.
03The policy lists CPT 92517, 92518 and 92519 for vestibular evoked myogenic potential testing as (E/I) Experimental/Investigational, and lists CPT 0333T and 0464T as (E/I) as well.
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