Why is the NIR essential for international students in France?
The NIR (Numéro d'Inscription au Répertoire), commonly known as the social security number, is the personal identifier that allows you to benefit from French health insurance, access healthcare reimbursements, and be recognised by all French social organisations (CAF, CROUS, Pôle emploi).
For an international student arriving in France, obtaining your NIR is one of the priority steps to complete within the first weeks. Without it, you can still receive care — a provisional number will be assigned — but reimbursements may be delayed, and many procedures (housing benefit application at the CAF, scholarship declarations, opening a bank account) will be more complicated.
This guide distinguishes the process according to your situation: EU/EEA national or non-EU student.
What is the NIR and how is it structured?
The NIR is a 15-digit number, unique and permanent, assigned by INSEE (National Institute of Statistics and Economic Studies) to each person born in France or affiliated with the French social security system.
Its structure encodes precise information:
| Position | Meaning | Example |
|---|---|---|
| 1st digit | Sex (1 = male, 2 = female) | 2 |
| 2nd-3rd digits | Year of birth | 99 (1999) |
| 4th-5th digits | Month of birth | 05 (May) |
| 6th-7th digits | Department of birth (97 = overseas, 99 = foreign) | 99 |
| 8th-10th digits | Country of birth (for persons born abroad) | 223 (Senegal) |
| 11th-13th digits | Order number | 123 |
| 14th-15th digits | Check key | 45 |
International students born outside France will systematically have '99' at positions 6-7, followed by the INSEE country code for their country of birth.
For EU/EEA students: simplified process
If you are a national of a European Union country, the European Economic Area (Iceland, Liechtenstein, Norway) or Switzerland, the process is considerably simpler.
Step 1: Activate your European Health Insurance Card (EHIC) in your home country
Before leaving for France, ask your national health insurance fund to issue you a valid EHIC. It will cover you for urgent medical care during the first weeks in France.
Step 2: Submit your affiliation file to the CPAM
Visit or send your file to the CPAM (Caisse Primaire d'Assurance Maladie) of your department. For students, the file may also be submitted through your university if it has a CPAM single-window partnership.
Required documents:
- Cerfa form 13941*05 (downloadable from ameli.fr)
- Passport or European national identity card
- University enrollment certificate
- Proof of address in France
- RIB (bank account details) for reimbursements
Processing time: 3 to 6 weeks for the definitive NIR to be assigned.
For non-EU students: full process
The process takes longer for students from countries outside the EU/EEA, because INSEE must verify your civil status with the authorities of your country of birth.
Phase 1: Provisional number (temporary NIR)
As soon as you submit your file to the CPAM, they will assign you a provisional number within 1 to 2 weeks. This number, which often begins with '7' or '8', allows you to access care immediately. It can be used with the Ameli app or with a paper certificate downloadable from ameli.fr.
Phase 2: Compiling the file for the definitive NIR
The file to send to the CPAM includes:
- Cerfa form 13941*05 — available at ameli.fr or at a CPAM office. Complete in capital letters.
- Valid passport — copy of all pages (including blank pages and visa stamps). The CPAM needs to see your complete travel history.
- Residence permit or validated VLS-TS — proving your lawful residence in France (front and back copy).
- Full birth certificate — translated by a sworn translator (registered with the competent judicial tribunal). Note: translations certified by a private translator without sworn status are not accepted. The cost of a sworn translation is €60 to €150 depending on the language and document length.
- Proof of address — less than 3 months old (rental receipt, EDF/GDF utility bill, accommodation certificate with a copy of the host's ID).
- University enrollment certificate — with institution stamp and current academic year.
- RIB — for healthcare reimbursements.
Phase 3: Verification by INSEE
The CPAM forwards your file to INSEE, which contacts the authorities of your country of birth to verify your civil status. This is the step that takes the most time: 3 to 6 months on average for sub-Saharan African and Maghreb countries, 1 to 3 months for Southeast Asian countries.
Phase 4: Assignment of definitive NIR and Carte Vitale issuance
Once the verification is complete, INSEE assigns your definitive NIR, which replaces the provisional number. The CPAM notifies you by letter and your Carte Vitale is issued automatically within 2 to 4 weeks.
How to track the progress of your application
Create your personal account on ameli.fr as soon as you have a provisional number. You can track your file status, download provisional rights certificates, and update your address.
If you have not heard anything 2 months after sending your file, contact your CPAM directly by post or by calling 3646 (general Ameli service, Monday to Friday 8:30am-5:30pm).
Your rights during the waiting period
While waiting for your definitive NIR, you are not without health coverage. With your provisional number and your rights certificate downloadable from ameli.fr, you can:
- See a GP (reimbursed at 70% of the conventional rate)
- Access hospital emergency departments
- Get a reimbursed medical prescription at a pharmacy
- Have reimbursed biological tests
It is advisable to take out a complementary health insurance plan (mutuelle) upon arrival in France to cover the co-payment (the 30% not reimbursed by Social Security). The Complémentaire Santé Solidaire (CSS) is available under income conditions and can be free for students with modest means.
Meridiane guides you through all these procedures: from assembling your CPAM file to activating your Ameli account, our AI assistant is available 24/7 at meridiane.fr.