How healthcare payment works in Luxembourg

This is general information, not medical or legal advice. Your health insurance fund has the final word on your own case.

The short version

• At the doctor, you usually pay the whole bill and the CNS pays you back most of it. More and more doctors now use a system called PID, where you only pay your own share at the desk. Not every doctor has it, so ask.
• At the lab, the pharmacy and in hospital, the CNS normally pays its part directly. You show your social security card and pay only what’s left.
• Blood tests are covered at 100% of the official rate if you have a prescription from your doctor and bring your card. Without a prescription, you pay everything.
• Your social security card comes after you’re registered with the CCSS, the social security office. If you’re employed, your employer registers you.

Paying the doctor: PID and “tiers payant”

In Luxembourg the normal rule at a doctor’s practice is simple: you pay, you get an invoice, and you send it to the CNS (the national health fund) to get your money back.

Tiers payant means the opposite: the health fund pays the provider directly, and you only pay the part it doesn’t cover. Guichet.lu, the government’s information site, says this already happens in some places, for example for hospital costs, medicines and lab tests. You show your social security card and pay only what’s left, like your share when you leave hospital.

PID (paiement immédiat direct) is the newer piece, and it’s what people usually mean when they say doctors now “do tiers payant”:

• What it is. When your doctor uses PID, the CNS sends its share straight to the doctor’s bank account within seconds. You pay only your personal share and any “personal convenience” fees (see below). The CNS gives the example of doctors’ fees: it normally covers 88%, so you pay the remaining 12%. Not every act is covered at the same rate, so your share can differ from bill to bill. Children and young people under 18 pay no personal share. Official explanation: CNS: Immediate Direct Payment (PID).
• When it started. PID went live on 26 September 2023 for a test group of GPs, and opened to all medical specialities on 19 March 2024 (minister’s answer to Parliament, 2026). It’s open to GPs, specialists and dentists.
• Who offers it. It’s optional for doctors. By 9 March 2026, 2,438 doctors and dentists had used it at least once, about 49% of those working with the CNS. That’s roughly half, so you can’t count on it.
• How to find out. Ask the practice before your appointment. The CNS says there is no public list of doctors who use PID.
• Who it’s for. Anyone insured through Luxembourg’s health insurance (CNS, and the public-sector funds CMFEP, CMFEC and EMCFL).
• What’s left out. A few things can’t go through PID yet, including hospital stays (inpatient or day hospital), care that needs prior approval from the medical control service (the CMSS), work accidents, radiotherapy, the national screening programmes, and acts that need an attachment such as a prescription. The full list is on the CNS page for doctors.
• Your paperwork. You get a PID invoice from the doctor. The CNS then sends you a statement, in your MyGuichet.lu space if you’ve switched on eDelivery, or by post about a month later. Don’t send the PID invoice to the CNS. If you have private top-up insurance, you can send them the CNS statement.

Something that changed this month: from 1 October 2026, doctors have to send their invoices to the CNS digitally, either through PID or through “digital reimbursement”. PID itself is still not compulsory. If your doctor doesn’t use PID, you still pay upfront, but your claim may already be with the CNS digitally.

If you’re on a low income, there’s a separate scheme called social tiers payant (TPS). It isn’t the same as PID: PID depends on whether your doctor uses it, while TPS depends on your own situation and has to be granted first (CNS: social tiers payant). You apply through the social office of your commune. It’s time-limited (3 to 6 months, renewable) and means you don’t pay upfront for medical and dental care.

What you may still pay at the doctor

• Your personal share of the official rate (for doctors’ fees, 12% in the CNS example above).
• Personal convenience fees (CP codes). These are never reimbursed. A doctor can charge them, if they told you beforehand, when you ask for a specific day and time (CP1), a Saturday morning (CP2), want to be seen right away without an appointment when it isn’t an emergency (CP5), or have a phone call longer than ten minutes (CP7), among others. A missed appointment you didn’t cancel at least 24 hours ahead can be charged as a normal consultation.
• A single room in hospital, if you choose one and it isn’t medically needed. Doctors can add 66% to their fees, and that part isn’t covered.

Getting your money back when you paid upfront

• Online or by app. You can send your invoice through the Gesondheetsapp or MyGuichet.lu, or print it and post it.
• By post. The CNS asks for the original invoice, proof of payment and, the first time, your bank details. You have two years from the date you paid. A screenshot isn’t accepted as proof of payment.
• At a CNS office. Immediate reimbursement is possible if the household’s bills come to at least €100 and were paid within the last 15 days. The CNS currently asks you to book an appointment.
• If your costs pile up. If your personal shares in one year go over 2.5% of your previous year’s income, you can ask for an additional reimbursement. The CNS gives a minimum of €518.18 for 2026.

Blood tests and lab work: what’s covered

Everything here comes from the CNS laboratory page.

• You need a prescription first. Without a prior prescription, lab tests are entirely at your expense. A prescription is valid for two months, unless your doctor writes otherwise. If several samples are needed, the last can be taken up to six months after the date on the prescription.
• Bring the prescription and your social security card. Then the lab bills the CNS directly (tiers payant) and you normally pay nothing for covered tests. Forgot your card? You pay, then send the CNS the original invoice, proof of payment and the original prescription.
• The rate is 100% of the official price in the CNS laboratory nomenclature (the official price list). If a lab abroad charges more, you’re reimbursed the Luxembourg price.
• You can choose your lab, except in an emergency or when you’re in hospital.
• Some tests need a reason on the prescription. Vitamin D is the common example: without a medical justification, it isn’t covered.
• Some tests have limits. Certain tests can’t be combined, and some have a maximum per prescription (for example 12 infection serology tests, or 16 for a first pregnancy check-up). If your prescription goes over, the lab has to tell you, and you pay for the extra tests yourself. You get an invoice showing what the CNS covers and what you pay.
• Tests that aren’t on the official list are yours to pay, unless the CNS has authorised them. Then tiers payant can still apply.
• A blood test at home is covered only if your doctor writes on the prescription that it’s medically necessary. Otherwise, Laboratoires Réunis, for example, charges €20 for a home visit.
• In hospital, tests are part of the hospital budget, so you normally pay nothing extra.
• Genetics and pathology are done at the Laboratoire national de santé (LNS), the national public lab.
• Cross-border workers having tests in their country of residence are reimbursed by the fund there, under that country’s rules.

Private top-up insurance (often called a “mutuelle”) is optional. Guichet.lu notes that you can take out additional private insurance on top of the public one. It can help with the shares the CNS doesn’t pay.

Where to have a blood test

The big private networks have many collection points across the country. For most routine tests you don’t need an appointment: you walk in with your prescription and card. Most open early, from 6:00 or 6:30. Many close by late morning or early afternoon, and a few stay open until 16:00 to 18:00. Always check the branch before you go.

The Health page lists the main lab networks, BIONEXT, Laboratoires Réunis and the national laboratory (LNS), with addresses, opening hours and links to their lab finders.

Registering for social security and getting your card

• If you work in Luxembourg as an employee, your employer registers you with the CCSS (Centre commun de la sécurité sociale) within 8 days of your start date. You don’t apply yourself.
• If you’re self-employed, you register yourself with the CCSS within 8 days of starting.
• Your health fund is shown on your registration. For most people in the private sector it’s the CNS. Public employees use the CMFEP or CMFEC, and CFL railway staff use the EMCFL.
• Your “matricule” is your 13-digit national identification number. It’s on the confirmation letter the CCSS posts to your official address, and on your card. You quote it on every claim and on invoices. If you don’t have one yet, your employer gives your date of birth and a copy of your ID with the registration.
• Your card. The CCSS says the card is sent automatically when you’re first registered, to your official address, within about 3 weeks. A recent CNS note says cards are usually requested, so if nothing arrives, you can order one online from the CCSS (you’ll need your matricule). In an emergency, you can get a provisional certificate, valid for 3 months, through MyGuichet.lu.
• Family members without their own insurance can usually be co-insured through you: a spouse or partner, children, and in some cases other relatives in your household. You apply to your health fund with supporting documents, like a family record book.
• Not working? Some residents can take out voluntary insurance through the CCSS. Ask them about your situation.
• Students. If an adult student isn’t covered by another recognised insurance or as a family member, their school or university registers them with the CCSS.
• Cross-border workers register in Luxembourg through their employer, then with the health fund where they live, using the S1 form (BL1 in Belgium). They can be treated in both countries.
• Living here but insured abroad (for example, you work in another country)? You register with the CNS using the S1 form from your foreign fund, and then get a one-sided Luxembourg card.

The European Health Insurance Card (EHIC)

• The back of your Luxembourg card is your EHIC. It covers medically necessary care on temporary stays in the EU, the EEA (Norway, Iceland, Liechtenstein) and Switzerland. In your first year here it’s only valid for 3 months, and the validity grows from the second year, up to 5 years.
• Visiting Luxembourg with your own country’s EHIC? You get necessary care on the same terms as people insured here. Without an EHIC or a bilateral-agreement form, you pay and claim at home.

A warning from the CCSS (October 2026): there are phishing campaigns using the CCSS logo about social security cards. Order your card only through ccss.lu, cns.lu or MyGuichet.lu.

Who to ask

• CNS: +352 2757-1, Monday to Friday, 8:00 to 16:30, or the contact form on cns.lu.
• CCSS (registration, cards): ccss.lu.
• Guichet.lu has the official step-by-step pages, in English.