For the new mental health codes, only prescribers are going to use the E/M codes IF THERE IS medical services being rendered apart form psychotherapy. PER the APA guidelines:
Appropriate E/M code (not selected on basis of time), and
+90833, 30 minute psychotherapy add on code
Prescribers who are not used to using E/M codes (they always could before this new rule) will need to get into the habit of watching TIME in their documentation.. NOT for the E/M but for therapy. If the provider saw the patient for 30 min of only therapy they can only bill the 90833. If the provided additional time in medical management (mostly pharmacological management) they need to now break that down.
The reason I said you need to look at documentation is that you won't know if there were medical services being rendered if it wasn't documented. (Not documented, not done)