Topographic Brain Mapping
© Blue Cross and Blue Shield of Montana
Current Effective Date:
February 01, 2014
Original Effective Date:
September 24, 2013
January 15, 2014
January 15, 2014
Topographic Brain Mapping (TBM), also known as quantitative electroencephalogram (QEEG), or brain electrical activity mapping (BEAM), is a visual enhancement of a traditional surface electroencephalogram (EEG). The enhancement process transforms the surface EEG data into a pictorial mapping (i.e., topographic image) of the seizure activity. Enhanced images are then placed on a schematic map of the brain, and the activity data is algorithmically analyzed by the size of the activity spike, the frequency of the discharges and the locality of the spikes. These algorithmic data are then compared to a database of normal patient brainwave activity to determine specific seizure types, focal location of seizure activity, or possible underlying medical conditions.
Refer to the ICD-9-CM manual.
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- Topographic Brain Mapping - Archived. Blue Cross Blue Shield Association Medical Policy Reference Manual (2003 March) Medicine: 2.01.10
- Electroencephalograms (EEGs) - Archived. Chicago, Illinois: Blue Cross Blue Shield Association Medical Policy Reference Manual (2004 January) Medicine: 2.01.14.
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||New 2013 BCBSMT medical policy.|
||Policy revised with literature review; ICD codes updated. Coverage unchanged.|