It seems 12B is an almost guaranteed 10% for tinnitus as well.

I had three surgeries on my left foot while on active duty, and now my left knee or left hip will give out on me at random times which will eventually lead to me falling.

When I had the knee, and hip evaluated by the VA they basically said, "yeah, we can see you have complained about it for the past 25 years at your annual visits but since you never sought treatment for it, 'too bad'".