I work in a Prior Authorization dept. and have 12 or so pharmacists at my disposal.. Have questions?
Yep, this is all correct. We work for a very specific plan, and our Prior Authorization drug list probably differs at least in part from many others out there. The list is based on $$ and rebates, diagnosis, abuse potential, etc.. Prior Auth can limit quantity, or access to a demographic (male vs female, or adult vs pediatric), or whether you can access the drug at all (no quantity restriction from insurance). As a clinical pharmacist in this setting, you apply the criteria restrictions of a plan to the patient.
An example I give my team all the time is:
If a prescriber requested Ambien 10mg 1 hs prn, but the provided diagnosis was Depression, as a clinical pharmacist you might ask if the patient also has Insomnia (in our case, the official diagnosis on the criteria). If they do, it's approvable. If they don't, then as a clinical pharmacist, you (and your license) can deny coverage of the medication for not meeting the Client/Plan's criteria.