How to Use Belgium's Insurance Ombudsman

Belgium's Ombudsman des assurances / Ombudsman van de Verzekeringen is the country's free, independent mediation body for private insurance disputes. If your hospitalization, health, or supplementary insurance claim has been denied by a private insurer — and internal complaints have not resolved it — the Ombudsman is your next step before civil court.

What Is Belgium's Insurance Ombudsman?

The Ombudsman des assurances (French) / Ombudsman van de Verzekeringen (Dutch) operates at ombudsman.as. It was established by Belgian law as an independent institution mediating between policyholders and private insurers. It handles complaints about all types of private insurance sold in Belgium.

Key facts:

• Free for policyholders — completely at no cost
• Available in Dutch, French, and German
• Independent — jointly funded by the insurance sector but operates independently
• Not a court — issues recommendations, which are not legally binding (but see below)
• Covers all licensed Belgian private insurers — DKV Belgium, AXA Belgium, AG Insurance, P&V, Ethias, Allianz Belgium, Generali Belgium, and others
• Typical timeline — 3 to 6 months from complete file receipt

What the Ombudsman Can Help With

The Insurance Ombudsman handles disputes about private insurance contracts governed by Belgian insurance law (Wet op de Landverzekeringsovereenkomst / Loi sur le contrat d'assurance terrestre).

This includes:

• Hospitalization insurance (ziekenhuisverzekering / assurance hospitalisation) — the most common category of complaints
• Supplementary health and ambulatory insurance
• Dental insurance
• Income protection / disability insurance
• Life insurance — benefit payment disputes
• Accident insurance
• Car, fire, and liability insurance (non-health matters)
• Travel insurance

The Ombudsman does not handle:

• RIZIV/mutuality statutory health insurance disputes — those go to the labour court
• Disputes already before a court
• Complaints about service quality alone (without a financial impact)
• Insurance disputes in Belgium's social security system (RIZIV, pension, accident at work)

Eligibility: When Can You File?

To file with the Ombudsman, you must:

1. Have a private insurance contract with a Belgian-licensed insurer
2. Have already filed a formal internal complaint with your insurer
3. Have received a final rejection from the insurer, OR 30 days have passed without an adequate response
4. Have no ongoing court proceedings for the same dispute

Note: the 30-day response rule aligns with Belgian regulatory requirements for financial institutions. If your insurer has not substantively responded to your complaint within 30 days, you are entitled to escalate.

How to File: Step by Step

Step 1 — Contact your insurer first. File a formal written complaint with your insurer's klachtendienst (Dutch) / service des réclamations (French). Reference your policy number, the denied claim, and the specific reason you disagree. Attach all supporting documents. Send by registered post and keep the receipt.

Step 2 — Receive the insurer's response. Wait for a substantive written reply. If the insurer upholds the denial or 30 days pass without adequate response, proceed.

Step 3 — Prepare your complaint file. Gather:

• Your insurance policy and general conditions
• The denial letter (with specific clause reference)
• Your internal complaint letter to the insurer
• The insurer's response to your complaint
• Medical records: hospital invoices, discharge summary, physician reports, prescriptions
• Your RIZIV/mutuality reimbursement extract (if hospitalization claim) — this shows what your mutuality already paid
• Any other relevant correspondence

Step 4 — File with the Ombudsman. Go to ombudsman.as and submit online. You can file in Dutch, French, or German. Alternatively, mail your complaint to:

Ombudsman van de Verzekeringen / Ombudsman des assurances de Meeûssquare 35 1000 Brussel / Bruxelles

Your complaint form asks for:

• Insurer name and policy number
• Description of the disputed matter
• What resolution you are seeking
• All attached documents

What Happens After You File?

Acknowledgment. The Ombudsman acknowledges your file and may request additional documents.

Investigation. The Ombudsman contacts the insurer for their position. The insurer must respond. The Ombudsman reviews all documents and may ask both parties clarifying questions.

Mediation. The Ombudsman attempts to facilitate an agreed solution between you and the insurer.

Recommendation. If mediation fails, the Ombudsman issues a written recommendation to the insurer.

Are Recommendations Binding?

The Ombudsman's recommendations are not legally binding in the strict sense — they cannot force payment the way a court judgment can. However:

• Belgian insurers participating in the Ombudsman scheme are contractually obligated under their participation agreement to take recommendations seriously
• Compliance rates are high — the vast majority of Belgian private insurers follow Ombudsman recommendations
• The Ombudsman publishes annual statistics on insurer compliance, creating strong reputational incentive
• If an insurer refuses a recommendation, the Ombudsman's closing documentation can be valuable evidence in subsequent civil court proceedings

After the Ombudsman: What If It Doesn't Work?

If the Ombudsman issues a recommendation against you, or the insurer refuses a recommendation in your favor:

Civil court — the competent Belgian civil court handles private insurance disputes. For hospitalization insurance claims, this is the Rechtbank van eerste aanleg (Tribunal de première instance) in your judicial district. The statute of limitations for Belgian private insurance is 3 years from the date the claim was due.

FSMA — if you believe the insurer engaged in systematic regulatory violations (e.g., refusing all claims of a certain type unlawfully), you can report to Belgium's financial regulator FSMA at fsma.be.

Practical Tips

Submit everything at once. Incomplete files delay the process significantly. Attach every relevant document from the start.

File in your preferred language. The Ombudsman operates in Dutch, French, and German. Use the language of your insurance contract for precision.

The RIZIV extract is critical for hospitalization claims. Belgian hospitalization insurance only covers the gap above RIZIV reimbursement. Without the mutuality reimbursement extract, neither the insurer nor the Ombudsman can calculate the correct amount. Always include it.

Be specific about the clause. Don't just describe what happened — identify the exact policy clause you believe entitles you to coverage. The more specific your complaint, the faster the Ombudsman can assess it.

Fight Back With ClaimBack

ClaimBack's free AI tool drafts a professional appeal letter in minutes, tailored to your insurer and denial reason. Don't let a denial be the final word.

Fight your denial at ClaimBack →

Related Reading:

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs External Insurance Appeal