No, I don`t have this. Unfortunately FDA is pretty vague about this in their official statements...
But, the Association of American Psychologists is clearer on this. They traditionally dealt with HF studies, and I assume this is why FDA is following their approach (
Frequently Asked Questions about Institutional Review Boards). As I understand, if you are a registered psychologist and do a study that involves humans, you have to get IRB review. No matter what the subject of the study is.
I think somewhere in the CFR 820 it states that you should follow local and federal laws & regulations, and of course HIIPA. The IRB review also makes sure that you do that, so this would be your "certificate" that you are not breaking any federal laws, when doing a HF study (which might happen way easier than one might think...).
Also, one point to consider: if you have a good protocol, IRB review is usually fast, and not that expensive. So I`d do it anyway, as a "quality check" for a subject matter, that neither me nor my colleagues are experts in...