These are the two links to the statutes (38 USC) and 38 CFR (regulations. The former are written by Congress for us. The latter by the VASEC against us.
The whole list of diagnostic codes in alphanumeric order.
http://www.ecfr.gov/cgi-bin/text-idx?rgn=div5;node=38:1.0.1.1.5#se38.1.4_155
asknod
brewerkelli
cspencer02
jamesaurora
kcraveiro
Laura
Veterans Claims Help 
this is really nice
I did it all on my own, no vso. Used ebenefits to upload all paperwork. The only help I had was you and hadit website. Also no future exams scheduled.