CMS is proposing that there is sufficient evidence to conclude that 
vagus nerve stimulation is not reasonable and necessary for treatment 
of resistant depression. Accordingly, we propose to issue a national 
noncoverage determination for this indication.

We are requesting public comments on this proposed determination 
pursuant to Section 731 of the Medicare Modernization Act. We are 
particularly interested in comments that include new evidence we have 
not reviewed here. After considering the public comments and any 
additional evidence we will make a final determination and issue a 
final decision memorandum.

http://www.cms.hhs.gov/mcd/viewdraftdecisionmemo.asp?id=195

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