This is a real problem because a lot of drugs have off label uses. Birth control can be used to control fibroids as well as curtail unwanted pregnancies.
I run into this constantly. My work sends out a health tip brochure every few months based on your prescriptions. I take a drug at low does that used to be prescribed for depression at much higher doses. I take it for closed brain trauma and migraine prevention. I keep getting hints on controlling my depression because I take this drug. I talked to my pharmicist about it and she said it isn’t prescribed for depression any more. It’s mostly for CBI and for nerve pain now but it is still reported as a depression drug.
It also gets reported to the MIB. In case you didn’t know there is a bureau similar to a credit bureau that tracks your prescriptions not by your diagnosis but by what you are assumed to be taking it for. Any employer or insurance provider has access to this MIB, medical information bureau and it is off wrong because of off label drug use and you can be refused insurance or a job because of a disease you may not have and you will never know it.
So some pharmacist deciding not to provide care can and is way off base by assuming you have a certain disease.