if you have an EHIC or is it E411?? then you get treatment free anyhoo …
No you don’t, this is an oft-repeated error.
If you have an EHIC, you get the same amount of “free” treatment as a citizen of the country you’re visiting.
If that country has no free health-care and requires their citizens to have insurance, then you get sweet FA.
If that country only partially covers the cost of treatment and requires their citizens to have “top-up” insurance then you will only get the partial costs. This is the case in France, where the state typically covers 70% of medical costs. 30% of the cost of, say, on operation on a broken leg can be a lot of cash.