On May 14, 2015, the MolDX program published a draft LCD proposing to cover the Nanostring Prosigna test for breast cancer (here). On August 13, 2015, MolDX published a final coverage LCD which becomes effective on 10/1/2015, coincident with the new ICD-10 diagnosis codes.
The final Prosigna LCD (essentially the same as the draft) is available here - L36125. MolDX also published a concise response to comments, primarily acknowledging letters of support of the draft policy (A54565, here).
The LCD also exists in draft form in KY/OH under the CGS MAC. That draft LCD, L36127, does not yet state it is released-to-final (here).
The company's press release is here.