TDIU but lower disability rating

Question:

Jim, I’m 76 yrs old Vietnam Vet, I was 80% service related disability.  I applied for TDIU with DAV for  PTSD and got 70% TDIU with full compensation monthly entitlement amount $3336.15 . Why was my disability rating lowered from 80% to 70% ?  Do I still need to submit VA form 21-4140 every year ref employment?

Jim's Reply:

I don't know why your rating changed. The VA Form 21-4140 has been phased out as a yearly requirement and as you're over 70, you weren't required to fill it out.