I've spent a good part of today interacting with US healthcare websites (all kinds, from insurance to providers).
Epic/MyChart is an eyesore, but it functions far far better than anything else.
A provider embedded some third party form vendor (e.g. “rate your pain on a scale of 1-10” type stuff). They used custom range controls that had a range of 0 to 100 WITH TWO SIGNIFICANT DIGITS.
So, I'm rating my e.g. pain level on TEN THOUSAND POINT SCALE.