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Aetna considers intra-operative electromyographic (EMG) monitoring of the facial nerve medically necessary for members undergoing any of the following intra-cranial neuro-otological surgeries:
Surgery for acoustic neuroma, cranial based lesions, or congenital auricular lesions; or
Microvascular decompression of the facial nerve for hemifacial spasm; or
Vestibular neurectomy for Meniere's disease; or
Surgical excision of neuromas of the facial nerve.
Aetna considers the combined use of intra-operative EMG monitoring of facial nerve and intra-operative monitoring of somatosensory evoked potentia
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