I agree with Why Chat FICOs are a mystery.
I know fro experience what a nightmare medical bills are. Too many hands stirring the pot if you ask me.
I'm against medical bills being on credit reports. Several reasons :
a) There most ALWAYS are errors

So many entities are involved (ins, dr, hosp, patient etc)
c) A person w/ seemingly perfect credit could have a serious illness, accident (or family member), and the collection racket (that's what it is !) could really cause a score to tumble.
Spoke to a banker a few weeks ago, and I was told, they don't even look at medical on credit
reports anymore. Essentially, because of some of what I outlined above, and as she said "everybody's
got 'em." (medical debts) !
Interesting..