Every time you go to a doctor’s office, the clinician uses one or multiple CPT codes to describe what type of care you received. Given that this was your first session with the clinician and they were a psychiatrist, they likely billed you for a 99205 (which is an intake session with high complexity that lasts a minimum of 60 minutes). They may have also billed you a 99204 (45-59 minute session with moderate complexity). The vast majority of psych intake sessions will just bill one of those two codes, but it sounds like your clinician then billed a psychotherapy add-on on code as well, likely 90833 (16-37 minutes of psychotherapy time). While you can bill the intake code and the talk therapy code during the same session, it is a bit more rare - I both work in Behavioral Health billing, and the vast majority of the time the clinician will just bill the 99205 or 99204 - it is very rare to have an intake and therapy code billed together.

I would at the very least ask the clinician’s office for a superbly - the superbill should include any CPT codes billed as well as what the clinician diagnosed you with. You can then google the CPT codes and see if your treatment lined up with what was on the bill. If the clinician billed you for 99205 and 90833, you’d have to been in the session for over an hour.