VA has gradually been revamping their procedures for approval/denial in their M-21. It would probably behoove your to brush up on their new, improved techniques for politely denying your claim. Attached is the latest Chapter 5 list of “How to let the Vet down gently” or “Everything you wanted to know about how to deny but were afraid to ask”.
I downloaded it for you here. I suggest you read and heed, ladies and gentlemen. It gives you a window in to the process and how tilted it is towards fencing you out.
asknod
Bethanie Spangenberg
kcraveiro
robinhoodesqvetsatty
Wesley McCauley
Veterans Claims Help 
Sure does have some mighty big words in there hoss. Bottom line, as I read it, deny at all costs but smile when you do it so as not to appear adverserial. If you are seen by two different doctors, specializing in the same field, one is VA temp and the other civilian then by golly deny because the one is affiliated with the VA. Sorry a55ed bunch of quacks.