My therapist didn't really give me my diagnosis, but my psychiatrist did. You should get a receipt with your diagnosis code for insurance on it, mind you, it may not be complete or up to date. My T simply put major depression as my diagnosis because that is how I presented when he first started seeing me. He realizes now that my diagnosis is bipolar disorder, but he's never bothered to change the code on the receipts. Insurance doesn't seem to care. My pdoc's code is bipolar 1, mixed.