Before you start

City registration and a national register number
A Belgian bank account for reimbursements
S1 or E104 form from your previous EU health insurer, if you have one
Employment or self-employment status, which determines how contributions are collected

Step-by-step

1
Choose a ziekenfonds and join
CM, Solidaris, the liberal and neutral funds, the independent funds such as Helan and Partenamut, or the free public fund HZIV/CAAMI. Statutory cover is identical everywhere; they differ on complementary benefits, service and the small monthly contribution. Nobody enrols you — not your employer, not the city.
In personWho: YouWeek 1–3
2
Hand over your S1 or E104 if you were insured in the EU
These forms carry prior cover across and prevent a fund applying a waiting period before entitlement begins. Ask your old insurer for the form before you leave — obtaining it afterwards is much slower and occasionally impossible.
In personWho: You
3
Find a GP taking new patients before you need one
Register a global medical file (globaal medisch dossier) with a single GP. It raises the reimbursement on GP consultations substantially, gives you a doctor holding your whole record, and costs you nothing because the fund pays the GP an annual fee for keeping it. In a city with an older-than-average population, some practices are closed to new patients — so do this in month one rather than in the week you first fall ill.
In personWho: YouFirst GP visit
4
Check whether a specialist is geconventioneerd
Doctors who have signed the national fee agreement charge the official tariff; those who have not may add supplements your reimbursement does not cover. The proportion varies by speciality, it is published, and it is a question to ask when booking rather than at the desk afterwards.
OnlineWho: You
5
Take hospitalisation insurance before you need it
Statutory cover handles most hospital costs, but a private single room can carry very large room and fee supplements. Hospitalisation insurance via your ziekenfonds, an insurer or your employer is the standard Belgian answer and is far cheaper taken in advance.
OnlineWho: You
6
Use 1733 out of hours, and know 1722 for storm damage
Evenings, weekends and public holidays, 1733 routes you to the on-call GP service — free, intended, and quicker than an emergency department for anything a GP can handle. 1722 is the separate non-urgent fire brigade line, which on this coast matters: it is the number for storm and water damage, and using 112 for it clogs the emergency line.
OnlineWho: You

Documents you’ll need

eID and national register number
Belgian bank account details
S1 or E104 from a previous EU insurer
Employment contract or self-employed social insurance affiliation
Vaccination records for children entering Flemish schools

Things most newcomers don’t know

Compulsory does not mean automatic — you have to join a fund yourself.

Your employer registers you for social security, which funds the system, but the ziekenfonds that actually reimburses you is a separate membership you take out. Until you have, you carry the full cost of treatment. Newcomers from countries with a national health service, or where the employer arranges cover, routinely spend their first weeks in Belgium uninsured without realising it.

Source: RIZIV/INAMI

Bruges is better served than a city of 120,000 has any right to be, because it is the provincial referral centre.

AZ Sint-Jan Brugge-Oostende is one of the largest hospitals in Flanders and serves the whole coastal province, so the specialist care, emergency capacity and diagnostics available here are those of a much bigger city. The corollary is that the catchment is regional, not municipal — waiting times reflect the whole province, and referrals arrive from the coast and the polders as well as from the city itself.

Source: community-reported; AZ Sint-Jan Brugge-Oostende

The globaal medisch dossier is free and raises your GP reimbursement immediately.

Nominating one GP to hold your GMD increases the refund rate on GP consultations, improves continuity because that doctor holds your full record, and costs you nothing because the fund pays the GP for maintaining it. It also makes out-of-hours cover and specialist referrals smoother. It is the cheapest optimisation in the Belgian system and a large share of foreign residents never hear of it.

Source: RIZIV/INAMI

Flanders levies its own long-term care contribution on top of the federal system.

The Flemish social protection scheme charges an annual care contribution on adults registered in Flanders and funds care budgets for long-term dependency and disability. It is a Flemish Community matter, so a resident of Bruges is treated differently from a resident of Brussels. It is small, it is separate from your ziekenfonds contribution, and arrivals frequently mistake the bill for an error and ignore it.

Source: Flemish Community

Common mistakes to avoid

Assuming your employer or the city enrols you in a health fund.
Leaving the S1 or E104 behind and being told a waiting period applies.
Waiting until you are ill to look for a GP, in a city where some practices are full.
Booking a non-agreement specialist without asking about supplements.
Calling 112 for storm damage instead of 1722.

Some of this may be out of date. Spotted something inaccurate? Help us keep it right for the next newcomer.