I have said this before on MN. My DH is in his 60s and recently went to have an MRI on his knee. The radiologist shuffled her feet and said with some embarrassment; 'I am sorry to have to ask this, but is there a chance you might be pregnant?.
For one of my many clinical hats, I take xrays of patients. I also deal with drugs which are known to effect the foetus.
In best past of 25 years of practice, noone has suggested I apply anything other than common sense in who I ask if they're pregnant. I've never - ever - heard it suggested I ask a man this. I also use my common sense on age. Over 12 and under 60, and female? I'm asking. Male, pre-pubertal, or drawing your pension then I'm not.
So it amazes me that this appears to be a thing in other services.
We do have a paper health form which we give everyone. There's one form which goes to everyone. And, yes, it's badly photocopied and wonky. So the men do get asked if they're pregnant on that, just as the toddlers get asked if they're smokers. Because the thought of having to customise the form to the individual is nightmarish, frankly. Generally the men just strike through that question, leave it blank, or tick no. If someone complained about that I'd probably think they were beign difficult for the sake of it.