The golden rule normally is, if you travel to another country that has more expensive healthcare then at home - you pay the difference.
Canadians get warned about that when we travel the United States, and need extra travel insurance.
For example : If I break my leg in Canada it will cost $1500 for treatment, in the US $4000.
Without travel insurance, I would need to pay the difference of $2500.
Basically, if you have US health bennies, they are good world wide, since the insurance company would actually save money if you happen to get sick outside the US.