Inny, just means those in network HAVE to give their clients a diagnosis, sometimes exaggerated (wrong in degree/how serious it is) so it's serious enough so the insurance will accept it. So, some anxiety or depression and you end up with a "paper" diagnosis (not necessarily what the T's tell you) of panic attacks or major depression. Even out of network, in order to get the insurance to pay, have to do that.
But it doesn't have anything to do with why you went to the T or what they tell you, etc. However, it's possible that some, especially beginning T's might "believe" what they write so then you can get at cross purposes with what you actually may want or need or be convinced you've got a serious, hard-to-cure illness when it doesn't have to be that way.
That's not necessarily what happens, but it can happen and it seems like everybody's looking the other way. But that's what sunrise is saying, why therapists aren't signing up for or clients aren't using insurance anymore, the whole system for using mental health insurance isn't very good. I used insurance back in the 70's but it was before managed care and was a whole different ball of wax.
But what your T does and why, one has to talk to one's T about. We know what happens to politicians whose treatment for depression (or drugs) gets out. I remember being asked on school forms if I'd had "mental illness," etc. There can be insurance risks for schools with troubled students or companies hiring people who might have a problem and no one wants to take on those risks; doesn't matter so much about personal stigma. I notice everyone always waits in a news broadcast where something really bizarre or horrific happened to see if the person "had a history of mental illness." Like that "explains" anything!