In this procedure, the provider removes a portion of the skull, or he may create a twist drill or burr hole in a patient’s skull. He then uses a stereotactic method, which makes use of a three dimensional coordinate system to locate small targets inside the brain and places a neurostimulator electrode array on the targeted location in a subcortical site. In this procedure, the provider does not obtain an intraoperative microelectrode recording. The provider performs this service to treat chronic difficult to control tremors, dystonia, involuntary movements and muscle contractions, or Parkinson’s disease.
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