I recently returned from an inpatient stay at the hospital for a week, and on my discharge papers my main diagnosis is "Depression NOS" Now I know the NOS means'not otherwise specified' but I still don't understand what this means. I know that I've been told I had major depression before, amongst many other things such as panic disorder, social anxiety, dissassociation, and an avoident and borderline personality and blah blahblah. What does this specific diagnosis mean?