Intraoperative Neurophysiological Monitoring

Covered: intraoperative facial‑nerve EMG is allowed for cochlear implant, canalplasty/external canal reconstruction, microvascular decompression for hemifacial spasm, acoustic neuroma surgery, and surgery for congenital auricular lesions; excluded/not medically necessary are combined facial EMG with SSEPs, postoperative SEP/MEP monitoring, intraoperative SSEPs/MEPs for indications other than the listed ones, and BAERs for indications not specified in CPB 0181. Key requirements/limitations: SSEPs/MEPs are considered experimental/investigational for unlisted indications and have no proven value for lumbar surgery below the spinal cord termination (L1–L2).

"For continuous intraoperative neurophysiology monitoring in the operating room with one-on-one monitoring requiring personal attendance, increments of less than 8 minutes should not be billed."

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