Certificate of co-insurance

The certificate of co-insurance can be requested and obtained via MyGuichet.

Certificat de coassurance
  • A certificate of co-insurance for Luxemburg residents is always issued by the competent Luxembourg health fund (CNS, CMFEP, CMFEC, EMCFL)
  • As a general rule, a certificate of co-insurance for non-residents is issued by the competent social security institution of the place of residence

If the spouse to be co-insured was insured in a country other than Luxembourg, they must provide the CMFEP with an affiliation certificate (S041 or co-insurance certificate) issued by the last social security organisation with which they were insured. If such a certificate cannot be provided because they have not resided in Europe, they must send a sworn declaration to the CMFEP, signed by themselves.

In this declaration, the spouse must swear not to have health insurance in another country and commit to promptly report any changes in their situation after the submission of this declaration.