The advantage of 24-hour AEEG is its ability to continuously record over a prolonged period both general and localized seizure activity during near-normal activity. A CMS National Coverage Determination (NCD) states that ambulatory EEG should always be preceded by a resting EEG. The EEG information is stored for later play back and analysis. Electrodes for at least 3 recording channels are secured to the patient's head while a digital or cassette recorder is secured to the patient's waist or to a shoulder harness. CPB 0322 - Electroencephalographic (EEG) Video Monitoring.Ī 24-hour ambulatory electroencephalogram (AEEG) is used to record EEG tracings on a cassette or digital recorder on a continuous outpatient basis.CPB 0289 - Grid Monitoring and Intraoperative Electroencephalography, and.CPB 0221 - Quantitative EEG (Brain Mapping),.
Ambulatory EEG monitoring for longer than 7 days may be reviewed for medical necessity. The goal of ambulatory EEG is usually achieved within 48 hours. Localization of the epileptogenic region of the brain during pre-surgical evaluation – to identify appropriate surgical candidates.Īetna considers ambulatory EEG experimental and investigational for all other indications because of insufficient evidence in the peer-reviewed literature.Īetna considers the combined use of ambulatory EEG and home-video recording an equally acceptable medically necessary alternative to ambulatory EEG alone.įootnotes* Requirements for a standard EEG and neurological examination is waived for medically necessary continuous EEG performed in an intensive care unit (ICU). Aetna considers ambulatory electroencephalography (EEG) with or without home video monitoring medically necessary for any of the following conditions, where the member has had a recent (within the past 12 months) neurologic examination and standard EEG studies Footnotes*:Ĭlassification of seizure type in members who have epilepsy (routine EEG is equivocal) – only ictal recordings can reliably be used to classify seizure type (or types) which is important in selecting appropriate anti-epileptic drug therapy orĭiagnosis of a seizure disorder (epilepsy) – members who have episodes suggestive of epilepsy when history, examination, and routine EEG do not resolve the diagnostic uncertainties (routine EEG should be negative with provocative measures) or
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