Doenting Medical Records for VA Disability?

My husband got back from a combat deployment to Afghanistan in October. He is EASing in June. He has a lot of service connected injuries and is having a hard time getting them doented. For starters, he went to his corpsman and the corpsman told him he is out of luck. And also, once getting back from deployment the USMC requires a post deployment health esment for every marine. His battaltion still has not done this. Last week they had to take a cognative test at work and because of his results he finally got to see a doctor today and was diagnosed with having a TBI. But aside from that he was blown up and has an issue with his hip knee and back. He has been having stomache problems the last year with mive heart burn and he has damage to his ears. We are trying to get everything doented but his battalion is making this almost impossible. I am wondering what we should do ourselves to get this doented. Will his appointment at the VA on the 31st doent this or will we have to go to a different doctor?