Quantitative EEG (Brain Mapping) (CPB 0221, reviewed 2026-04-14)
Aetna considers quantitative EEG (brain mapping, also called BEAM) medically necessary only as an adjunct to traditional EEG for specified uses, including ambulatory EEG recording to facilitate later expert visual interpretation, continuous EEG monitoring by frequency-trending in the operating room or ICU, and topographic voltage and dipole analysis in pre-surgical evaluations for intractable epilepsy. Aetna considers quantitative EEG experimental, investigational or unproven for all other indications, including attention disorders, autism spectrum disorders, depression, schizophrenia, bipolar disorder, insomnia, fibromyalgia, post-traumatic stress disorder and post-concussion syndrome. The BrainScope One System (Ahead 300) is considered experimental, investigational or unproven for evaluation of concussion or traumatic brain injury.