Agreed, healthcare became a human right right around the time it changed from being mostly palliative care to curative care. I'll pinpoint it to somewhere between the invention of insulin and penicillin. It's at that point where healthcare outcomes really start to diverge between rich and poor.

Something I'll note, Jay Gould, one of the wealthiest men of his time died of tuberculosis - something we now think of as a poor persons disease.