The French system is fairly complex, it's not single payer. To sum up, for "everyday" health issues the public health insurance reimburses 70%. For grave long-t

The French system is fairly complex, it's not single payer. To sum up, for "everyday" health issues the public health insurance reimburses 70%. For grave long-term illnesses, you're covered 100%. You're supposed to have a private health insurance (it's now mandatory for all employees) that reimburses the remaining 30% and all extra costs. That includes some dental and optical work, but also stuff like single-bed rooms in the hospital. Your additional private insurance also covers doctors charging more than the "official" price.