Is deep brain stimulation considered brain surgery?

You get the most from this site when you describe the problem in detail followed by a clear related question. Questions without context are hard to answer. If I do a deep brain stimulation with ultrasound it is not "brain surgery". If this procedure involves inserting a device inside the brain substance, it would. You are welcome to start over and clarify the question.

DBS (deep brain stimulator) units are used in Parkinson's disease and other movement disorders, and since the electrodes enter the brain itself this is indeed a surgical procedure. However, your question is confusing, and not sure precisely what information you seek.