I am 70% for PTSD . I applied for TDIU and was denied. They left my 70% rating and said I am able to work. They stated that they acknowledge what my private doctor says but they are going to go with my visits over the last 4 years from the VA . I would like to know my next steps if I would like to appeal.
Well...the next step can go any number of ways. You can DIY an appeal, you can seek out an advocate to help you, or you can retain an attorney at no out of pocket expense.
My choice is always the lawyer. Read https://www.vawatchdog.org/how-to-hire-a-veterans-law-attorney.html