I was told for myself that since I have PN and RSD that if they put it for the PN under the reason I think it should be covered and for the RSD not sure. So that made me wonder if for RSD if it is not always covered. Not sure though and I am in the US. I too have seen a few PM docs and have had one right away say he wanted to do the SCS no back check so on. Then I had another who wanted to do more pre stuff. I agree it depends on who you see and probably the state you are in some cases. I have also heard about the leads,spreading but then I also have a friend who really is seeing huge benefits. It is hard to know what ones own body will respond like. Good luck and feel better