[Slings and Arrows]

More importantly, it not necessary for a dispensing pharmacy to know the patient’s diagnosis: all they need is a legible prescription from a licensed physician. Adding a diagnosis code just makes it easier for a patient’s private information to be divulged by unauthorized database access or a malicious drone working for the insurance plan

I beg your pardon, but this is not the case. A pharmacist's mandate includes dispensing the correct drug for the patient's disease, and the pharmacist is both ethically and legally liable if a drug is dispensed for an inappropriate indication. They may not ask all the time, but if they do they generally have a good reason.

[paterfamilias]

“A pharmacist’s mandate includes dispensing the correct drug for the patient’s disease, and the pharmacist is both ethically and legally liable if a drug is dispensed for an inappropriate indication.”

It is legal in all 50 states to prescribe drugs for “off-label” indications.

These indications are usually supported by medical research of which the pharmacist may often be unaware.

An example is beta blockers, originally approved for treatment of hypertension, but widely used to control tachycardia in atrial fibrillation and hyperthyroidism for many years before that indication was approved my the FDA.

Thus, it is not up to a pharmacist to pass judgement on the indication.