IN BRIEF
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When you find yourself confronted with a sick leave At Luxembourg, it is essential to know the right steps to follow to ensure your social protection. There National Health Fund (CNS) plays a central role in managing your health insurance rights, and it is essential to understand where to go with any questions or requests. In this article we will explore thehealth insurance address and the services it offers, in order to guide you as best as possible in your administrative and medical procedures.
The system of social security in Luxembourg is well structured, but can sometimes seem complex for new residents. One of the most frequently asked questions concernshealth insurance address, also known as National Health Fund (CNS). This article informs you of the advantages and disadvantages of having a single address for your administrative procedures via the CNS and provides you with the essential information to communicate effectively with this institution.
Benefits
Have a single address for your correspondence with the CNS has several advantages. First of all, it greatly simplifies the process of sending documents, especially in the event of medical certificates or refund requests. By carrying out all your procedures at the same address, you minimize the risk of errors and delays linked to the sending of your mail. You can also use this address for all your incapacity for work certificates, thus ensuring better transmission of information to your employer.
Then, this consolidation of services to the CNS allows more efficient management of requests. Policyholders can quickly access a range of health and safety resources. social benefits, which makes it easier to obtain the necessary information. In addition, the CNS provides a system of online appointment booking via MyGuichet.lu, allowing optimized consultation and accessible to all.

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Disadvantages
single address presents undeniable benefits, there are also disadvantages to consider. One of the main concerns is related to the centralization of services, which can lead to work overload. This can potentially slow down processing times, especially during times of high demand.
Additionally, having a single address means you will need to be extra careful when sending your documents. An error in sending your medical certificate or your refund request could lead to administrative complications. It is therefore crucial to carefully follow the instructions provided by the CNS to ensure smooth management of your procedures.
Finally, although the CNS offers support to policyholders, some people may feel a difficulty accessing services due to increasing digitalization. People less comfortable with digital tools may be at a disadvantage compared to those who are proficient in these systems.
There health insurance in Luxembourg plays an essential role in the context of social security of the country. This article will guide you through the most relevant information on its address, the steps to follow in the event of sick leave, as well as the services available to policyholders. Whether you are a Luxembourg resident or an expatriate, this information will be of great help to you.

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Where is the national health fund (CNS) located?
There National Health Fund (CNS) is located at the Social Security City, at number 5 rue Mercier in Luxembourg. This new address was inaugurated to centralize all operations related to social security and make access easier for policyholders. It is important to go to this address for any request, certificate or information.

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Steps to follow in the event of sick leave
When an insured person is on sick leave, he must inform his employer on the first day of his absence. For this, it is crucial to send a medical certificate to the CNS within three days. The declaration of incapacity for work can be made online through the MyGuichet.lu portal, thus guaranteeing rapid and efficient processing.

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What to do if you need information?
For any questions or steps to take, it is essential to know that the CNS has a single address for mail. You must send your requests and certificates to the following address: CNS, 125 route d’Esch, L-1471 Luxembourg. Remember to keep the postmark as proof of postage.

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Online tools to make your procedures easier
With digital evolution, several online services are now available to facilitate your interactions with the CNS. Go to the site CNS for more information on the declaration of incapacity for work and many other administrative procedures.
Understanding your social security rights
It is essential for all policyholders to know their rights regarding health and of social protection. To better understand mutual health insurance and the different services offered, consult resources such as this guide or learn more about social security in Luxembourg via this site.

The health insurance in Luxembourg plays a crucial role in the health system. social security. Whether you are a resident or an expatriate, it is essential to know theaddress of the National Health Fund (CNS) and to fully understand the steps to follow in the event of sick leave. In this article, we provide you with practical information and advice to facilitate your interactions with the CNS.
CNS address
The CNS recently changed its address and you can now send your letters to the Social Security City, located at 5 rue Mercier in Luxembourg. This unique address makes it possible to centralize all requests and documents, such as medical certificates or refund requests.

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How to get to the Social Security City?
To get to the Cité de la Sécurité Sociale, several transport options are available. The city of Luxembourg is easily accessible by car, bus or train. Be sure to check times and lines, especially if you plan to visit the agency during opening hours.
Important events and opening hours
The Social Security City opened its doors on June 5, 2024, marking a turning point in the accessibility of health services. Opening hours are designed to adapt to the needs of policyholders. Remember to consult the official CNS website to obtain up-to-date hours and plan your visit.
Make an appointment online
To save time, it is recommended to book your appointment online via the portal MyGuichet.lu. This simple and effective system allows you to avoid queues and make your procedures easier.
Can you send a certificate of incapacity for work?
In the event of illness, do not forget to inform your employer on the first day of absence and send your medical certificate to the CNS within three days. Information regarding the sending of documents is available on the CNS website, where you will also find details on deadlines and procedures.
Understanding your rights
It is crucial to know your health insurance rights. If you are affiliated with the CNS, you can claim various services, particularly for long-term care. For detailed information, consult the guides available on the different sites, such as this guide.
Reimbursement of medical expenses
Seeking treatment in Luxembourg can cause medical expenses important. Find out about the insured persons and the reimbursement procedure in your insurance contract. You can obtain further details on this subject by visiting the CNS website at the following address: www.cns.lu.
Additional information and resources
For any questions relating to social security in Luxembourg, do not hesitate to explore the resources available online, such as this site or even this one, which will provide you with essential information on the procedures and services offered.
Type of Correspondence | Address / Procedure |
General Mail | CNS, 125 route d’Esch, L-1471 Luxembourg |
Certificate of Incapacity for Work | Send to CNS no later than the 3rd day of absence |
Refund Request | To be sent to CNS at the above address |
Contact Information | Telephone and e-mail available on the CNS website |
Making an Appointment | Online reservation via MyGuichet.lu |
Access to the Agency | Information on accessibility during construction available |
Opening Hours | Check timetables on the CNS website |

There National Health Fund (CNS) is an essential pillar for all Luxembourg residents. If you want to interact with this institution, it is important to know the address to send your requests or certificates. The CNS has centralized this process by providing you with single address for all your mail: this is the CNS, 125 route d’Esch in Luxembourg. This change considerably simplifies exchanges between policyholders and the health fund.
If you are on sick leave, it is crucial to respect certain procedures. According to Luxembourg legislation, you must inform your employer from the first day of your absence and send your medical certificate to the CNS within three days. This allows for rapid management of your situation and ensures that you benefit from the protections due to you.
From June 5, the Social Security City will be accessible to the public, with improved services and teams ready to support you. Located at number 5 rue Mercier, this new structure brings together services linked to social security, making all procedures even more fluid and efficient. Do not hesitate to make an appointment online via MyGuichet.lu for fast and hassle-free service.
Reimbursements for medical expenses are also a major concern for many policyholders. It is good to know that, as part of your health insurance, several costs can be reimbursed. To do this, it is necessary to send your reimbursement requests to the CNS, always using the address mentioned above. A quickly implemented process can help you recover some of your medical expenses.
Finally, for expatriate policyholders, it is essential to familiarize yourself with the specifics of thehealth insurance in Luxembourg. The procedure is well defined, and despite the complexity that can sometimes exist due to different regulations, the support of the CNS is there to guide you at each step. Whether you are a permanent or temporary resident, your health and your rights are at the heart of the concerns of the National Health Fund.
In Luxembourg, the management of your health insurance may seem complex, but it is crucial to understand the steps and procedures to follow to benefit from your rights. This article guides you on theaddress of the National Health Fund (CNS), as well as the services available and the essential information to know regarding social security.
Address of the National Health Fund (CNS)
There National Health Fund (CNS) is the main organization responsible for in Luxembourg. For all correspondence, it is imperative to use the official address:
This unique address ensures that your application or certificate will be processed quickly and efficiently.
Visit to the Social Security City
The Cité de la Sécurité Sociale, which brings together several agencies, will open its doors from June 5, 2024, at number 5 rue Mercier. You will be able to meet advisors there for any questions relating to your social security or to your health insurance.
To avoid any inconvenience, it is advisable to book your appointment online via MyGuichet.lu. This service will allow you to be welcomed in the best conditions.
Declaration in case of illness
In case of, you must inform your employer from the first day of your absence. It is also important to send your medical certificate to the CNS within three days. This ensures the continuity of your links with your employer as well as access to your rights.
The medical certificate must be sent to the address indicated above. Don’t forget that after you stop working, you will also have to respect certain deadlines so as not to lose your rights to daily allowances.
Reimbursements of medical expenses
Luxembourg offers significant health care coverage, but it is crucial to understand how the system works. reimbursement of medical expenses. If you need a refund, be sure to send your refund request accompanied by the necessary documents to the CNS.
Be sure to keep all your receipts and medical documents, as they may be requested to support your reimbursement request. Also find out about the list of reimbursable procedures and services, to ensure that your costs are covered.
Social protection for temporary workers
Temporary workers also benefit from social protection. In the event of illness, they must provide a medical certificate to the CNS no later than the third day of their incapacity for work. This allows them to guarantee the continuity of their coverage, even in the event of prolonged absence.
Support and contacts
If you have questions or need assistance, the CNS provides customer service accessible by telephone or email. Do not hesitate to contact them for personalized information regarding your situation. This approach will allow you to obtain precise answers adapted to your needs.
In summary, knowing theCNS address, understanding disease-related procedures, and being informed about reimbursements are crucial steps in managing your health insurance in Luxembourg with complete peace of mind.

If you are in Luxembourg and are faced with a absence due to illness, it is essential to know the steps to follow, as well as the address to which you should send your requests and certificates. There national health fund (CNS) is the main organization that takes care of your health coverage, and it is imperative to maintain fluid communication with this organization.
The CNS has recently moved and all policyholders must now use a single address for sending their letters. This change is an important step towards better centralization of services, thus facilitating procedures for policyholders. For all correspondence, you must send your mail to the new address located at 5, rue Mercier, in Luxembourg. This simplifies the process and avoids confusion by making document management more efficient.
Remember that if you are unable to work due to illness, it is crucial to inform your employer from day one. You must also send your medical certificate to the CNS within three days. This approach is essential to ensure the rapid processing of your file and the reimbursement of your medical expenses.
In addition, for any visit to one of the CNS agencies, it is now possible to book an appointment online via MyGuichet.lu. This makes the process even more accessible and convenient for all policyholders.
In short, being informed of important procedures and addresses linked to health insurance in Luxembourg will allow you to manage your healthcare in a calm and efficient manner.
FAQ on the address of the health insurance in Luxembourg
What is the address of the Caisse Nationale de Santé (CNS) in Luxembourg? You must send your mail to the only address: CNS, 125 route d’Esch, L-1471 Luxembourg.
How to get to the Cité de la Sécurité Sociale? The Cité de la Sécurité Sociale is located at number 5 rue Mercier in Luxembourg and is open from June 5, 2024.
What documents should I send in the event of sick leave? In the event of incapacity for work, do not forget to send your medical certificate to the CNS, ideally before the 3rd day of absence.
How to make an appointment with the CNS? You can book your appointment online quickly and easily via MyGuichet.lu.
What are the opening hours of the CNS? Opening times may vary, so it is advisable to check up-to-date information before visiting.
How to obtain reimbursement for medical expenses? For reimbursement of your health expenses, be sure to send the necessary documents to the CNS.
What should I do if I’m a temporary worker and I get sick? If you are temporary, you must also inform your employer and send a medical certificate to the CNS within the required time frame.
Where should I send my sick leave? All work stoppages must be addressed to the National Health Fund according to the instructions provided by your employer.