An international health insurance plan is essential for most foreigners moving to France for a good coverage of your healthcare costs :
Please note that proof of healthcare coverage is necessary for almost all types of French visas before you can enter the country.
VISA - COMPLIANT HEALTH INSURANCE
If you are a newcomer from another country outside the European Union, you may need to show proof of private health insurance during the visa application process.
France requires most visa applicants to prove they will not become a burden on the State if they need medical care.
That is why France-Visas and the French consulates require proof of private medical / health insurance for long-stay visa applicants.
This is a legal requirement related to your right to live in France
CPAM Application - COMPLIANT HEALTH INSURANCE
If you are applying for the French Healthcare coverage System, you must provide you residence permit, which will enable you to obtain your social security number.
Once you have obtained your social security number, you can take out top-up insurance to supplement your French insurance coverage.