I see three ts, all of whom have a copy of the extensive psych testing that I did and the diagnosis made there (DID, MDD, Mixed personality disorder). All three ts use a different diagnosis code when they bill. One uses DID and alcoholism, and I have been sober for 29 years and that is definitely not playing any part in the treatment she is providing. I figure that the insurance company probably prefers having the different diagnoses. Oh, and they would all agree that I have DID and am recovering from MDD and probably would agree with the personality disorder. And my pdoc agrees with the DID, treats me for depression and anxiety because (like BPD) there is no generally accepted medication to help with DID.

All that to say, take the diagnosis with a grain of salt. Mental illnesses overlap a lot, with the same symptom appearing in numerous lists for various disorders. It's not like cancer where knowing the exact diagnosis has a huge impact on treatment. The same stuff that helps my anxiety that comes with the DID probably helps you with your anxiety which may be or may not be part of BPD. And the anxiety of someone with PTSD, or generalized anxiety or depression or probably other things.