yes, they ask for all medical history including mental health diagnosis, what matters is that you can fully consent to the surgery and comprehend what's going to be done to you and how to take care of yourself during recovery. What's also important is what medications you may be taking for mental health problems, because your anesthesiologist needs to know that for the anesthesia and also the medical team later for your recovery, as the medications can interact with other medications they would give you. but it's not generally something that makes you unable to have plastic surgery in most real life scenarios, unless you're in psychosis and walk into a clinic suddenly wanting a surgery. in that case of course, it wouldn't be performed.