The Disabled License is the same as the Lifetime (over 65) license. It's free, but you need to update it every year. Once you get your first Lifetime/Disabled License from either a Town Hall or DEP you are in the system. When you renew on an annual basis this updates the info so you can get your tags if you want to hunt anything other than small game.

It's free - so do your annual update and you are good to go.