Up until this year, my insurance covered 30 sessions a year, and my T used "adjustment disorder" as the diagnosis.

This year, my insurance pays for unlimited visits, but only for certain diagnoses. PTSD happens to be one of them, and I do have PTSD, so T is using that. he said there is more paperwork involved now, and that he needs to report on specific symptoms (intrusive thoughts, hypervigilance, etc). He said PTSD is a "good" diagnosis to use, because there is potentially a forseeable end to it, and it won't follow me around for the rest of my life.

That is interesting about the ADHD, sunny. Have you asked your PNP about it? I would be too curious to not ask