1. On the 15th and 16th of March 2018, the CNS office in Clervaux will be closed during relocation. As of 19th of March 2018, the CNS will welcome you at the following address: NORDSTROOSS Shopping Mile Marnach - Block B 9

  2. Receive online the reimbursement statements that we currently send you by post each time you request a refund by sending in a paid invoice. Log on to Choose My Data from the menu at the top, then Health

  3. If you want to inform the CNS of a change of address, the request can be done per email to:, or by  mail to the "Service Coassurance et signalétique" . Luxembourg residents do not

  4. Some procedures can be done online so there is no need to wait on the phone or visit an agency. change bank details; request a provisional certificate replacing the European Health Insurance Card; request a certificate of co-insurance; request

  5. Due to an error, some reimbursement statements may be duplicated in MyGuichet. This error occurred on February 27th and will therefore remain an isolated incident. It is currently not possible to delete this erroneous reimbursement statement in the online area

  6. An insured person who wishes to contact the CNS by phone may do so by dialing either the central phone number (off-peak hours are 8-9am, 1:30-2pm and 3-4pm) or one of the various pool numbers

  7. The CNS offers a range of online services, some of which are now available via However, the CNS remains the single point of contact for any queries relating to a specific file or the personal situation of the insured person. The MyGuichet Helpdesk may be contacted for technical/IT questions or issues.

  8. The system which allowed parents to usually request up to 2 days of leave per calendar year to stay with their sick child under 15 years of age has been replaced with a new mechanism as of 2018. The new

  9. The certificates of remuneration for the year 2017 are automatically sent out starting mid-February. Given the number of certificates that need to be issued, the mailing should be finalised mid-March.

  10. For a reimbursement by bank transfer, please send the original paid and receipted fee notes and invoices to the following address: Caisse nationale de santé Remboursements L-2980 LUXEMBOURG

  11. If the insured person wishes to be refunded by cheque in one of the CNS agencies, they will from now on receive the corresponding reimbursement statement immediately. The CNS offers this service in favour of the insured person, who will no longer have to wait to receive the document by post.

  12. The CNS presents its annuel report 2016. It shows the functioning and organisation of the administration in terms of both the governance and the different departments in charge of health-maternity and long-term care insurances.

  13. In order to efficiently manage and register certificates of incapacity for work, it is recommended to send them directly to the following address: Caisse nationale de santé Service Contrôle et gestion des certificats d'incapacité de travail L-2979 Luxembourg

  14. Discover our new leaflet "Hearing aids". It addresses the terms of reimbursement and the 5-step process for a coverage of hearing aids and accessories.

  15. The 13-digit national identification number (matricule) must be indicated on each original medical certificate of incapacity for work sent to the CNS. If the doctor did not mention this number on the certificate, the insured person may add it


    The german (DE) version of the CNS website is now online.

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