Co-insurance and personal details

Change of address and family situation

A written request must be sent to the CNS in order to change an address. The request can be sent by mail to the "Service Coassurance et Signalétique" or by e-mail.

Luxembourg residents

Luxembourg residents are not required to declare their change of address or family situation to the CNS.

The Luxembourg commune of residence updates the data in the National Registre of Natural Persons (Registre national des personnes physiques - RNPP).

Non-residents

To allow the CNS to process the request, it is essential to indicate the 13-digit national identification number (matricule number). 

Change of address

Request via MyGuichet.lu

A new process on MyGuichet.lu "Application for rectification of data from the national registry of natural persons" allows non-residents to easily communicate a change of address to the National Registry of Natural Persons (RNPP) of the Luxembourg State.

The communication of a change of address to the RNPP can now be performed online, 24/7 via MyGuichet.lu without the need for a LuxTrust product.

For all other changes, a LuxTrust product remains mandatory.

 

At the end of the process, the following documents are requested in PDF format:

  • a copy of your identity card or passport
  • a certificate of residence

Change in family situation

Request to the CNS

A written request must be sent to the CNS in order to update the family situation (marriage, divorce, death, birth) in our database. The request can be sent by mail to the "Service Coassurance et signalétique" or by e-mail.

The communication of a change in family situation must be accompanied by the marriage certificate, the marriage certificate with divorce transcription, the death certificate or the birth certificate... .

Request via MyGuichet.lu

A new process on MyGuichet.lu "Application for rectification of data from the national registry of natural persons" allows non-residents to easily communicate a change of family situation to the National Registry of Natural Persons (RNPP) of the Luxembourg State.

The communication of a change of family situation to the RNPP can now be performed online, 24/7 via MyGuichet.lu without the need for a LuxTrust product. For all other changes, a LuxTrust product remains mandatory.

At the end of the process, the documents to be attached are displayed.

Particular case: Registration of a civil partnership concluded abroad

For a civil partnership registered abroad, the partners may, if they wish, be recognised as partners in Luxembourg by addressing a request to the Public Prosecutor's Office in order to register their partnership at the Luxembourg Civil Register.

Registration of a partnership registered abroad in the Luxembourg Civil Register allows the partnership to be considered as a Luxembourg partnership.

The registration of the partner in the RNPP is done after registration in the Civil Register.

Change of bank account

The request to change a bank account with the CNS is made via MyGuichet, with or without LuxTrust authentication, by following the link below.

Note

A bank identity statement (relevé d'identité bancaire RIB) issued by the financial institution must be submitted in order to update the bank account details.

The request cannot be processed without this document.

Request for an affiliation certificate for those living on social inclusion income and those living on pensions

The affiliation certificate for those benefiting from a social inclusion income or those living on pensions can be requested with the "Service Coassurance et signalétique" by using the e-mail below.

Note

The CNS only issues the affiliation certificate for persons benefiting from a social inclusion income and those living on pensions.

The certificate of affiliation for active persons must be requested with the Joint Centre of Social Security (Centre commun de la sécurité sociale).

Request for a certificate of co-insurance

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

Note

1) A certificate of co-insurance for Luxemburg residents is always issued by the competent Luxembourg health fund (CNS, CMFEP, CMFEC, EMCFL).

2) 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.  

Exception : if the institution requesting the certificate of co-insurance (e.g. university, embassy etc.) is not situated within the country of residence, the CNS is responsible for issuing the requested certificate.

 

Request for an European Health Insurance Card and a provisional certificate of replacement

European Health Insurance Card

First card or card that has already expired

If your current card has expired or if you do not have a card, you can order it on the website of the Joint Centre of Social Security (Centre commun de la sécurité sociale).

Card still valid but due to expire soon

If your current card is still valid but is due to expire soon, you can order a new card by e-mail using the contact form.

It is important that you also notify the CNS of any change of address so that your card and any other mail can be delivered correctly.

Provisional certificate of replacement

The provisional certificate replacing the EHIC (valid for three months as of the issue date) can be issued on request via MyGuichet.

Request for co-insurance and other specific requests

  • Co-insurance of family members (resident)
  • In care responsibility for children 
  • Change of parental authority 
  • Reception of children in foster care
  • Continuation of co-insurance beyond the age of 30
  • Separation within marriage
  • Adoption
  • Changes to personal details: name, first name, date of birth

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