I have been on DISABILITY RETIREMENT starting 2009, don't know how to fill out DISABILITY RETIREMENT boxes other than by what is on the FORM SSA-1099.

[Cindy0H]

There isn't actually a special place to enter that a person is disabled, or a specific tax credit for the disabled on a federal tax return. 

Some states have special tax benefits in their tax laws for the disabled.  If this is the case, the question would be asked as you're going through the state interview in TurboTax.

I can investigate a state if you want me to. Respond in the comment box below.