Insurance Claim Denied in France? Here's What You Can Do

France operates a layered healthcare and insurance system: universal public coverage through Sécurité Sociale, supplemented by voluntary mutuelle or complementary insurance that most employees receive through their employer. If a claim has been denied — whether by Sécurité Sociale (CPAM), a mutuelle such as MGEN or Malakoff Humanis, or a private insurer — you have well-defined legal rights to challenge that decision.

The French Insurance Landscape

French healthcare financing works in two layers:

Layer 1 — Sécurité Sociale / CPAM: The Caisse Primaire d'Assurance Maladie (CPAM) is your local branch of the national health insurance system, managed under the Assurance Maladie umbrella. CPAM covers a defined statutory percentage of medical costs (typically 70% for GP visits, up to 100% for serious conditions). Disputes about CPAM decisions follow an administrative process.

Layer 2 — Mutuelle / Complémentaire Santé: The remaining costs (ticket modérateur) are typically covered by a mutuelle (mutual health society) or complementary health insurer. Since 2016, employers must provide complémentaire santé under the ANI (Accord National Interprofessionnel). Major mutuelles include MGEN, Harmonie Mutuelle, Malakoff Humanis, Groupama, and others. These are regulated by the Autorité de Contrôle Prudentiel et de Résolution (ACPR) under the Banque de France.

Private life, home, vehicle, and other insurance lines are also regulated by ACPR and are subject to the Code des assurances (French Insurance Code).

Key Regulatory Bodies

• ACPR (Autorité de Contrôle Prudentiel et de Résolution): supervises all insurers and mutuelles — you can file a complaint about insurer conduct at acpr.banque-france.fr
• FFA Médiateur (Fédération Française de l'Assurance): the free mediation service for disputes involving private insurance companies governed by the Code des assurances — mediateur.ffa-assurance.fr
• Défenseur des droits: the constitutional ombudsman who can assist with public insurance administration disputes

Appealing CPAM Decisions

CPAM disputes (about refunds of medical costs, treatment authorisations, or reimbursement rates) have their own administrative process:

Step 1 — Commission de Recours Amiable (CRA). File a written recours amiable (amicable appeal) to the CRA of your local CPAM within two months of the denial. The CRA is an internal review body that re-examines the decision. You submit your case, supporting medical documentation, and the specific grounds for your appeal. The CRA has two months to respond.

Step 2 — Tribunal Judiciaire (Pôle Social). If the CRA confirms the denial or fails to respond, you can appeal to the Pôle social du tribunal judiciaire — the social affairs chamber of the civil court. These proceedings are free for claimants. You file a recours contentieux within two months of the CRA decision.

Appealing Mutuelle or Private Insurance Decisions

Step 1 — Internal complaint. Write a formal réclamation to your mutuelle or insurer's service consommateurs. Under French law, insurers must acknowledge complaints within 10 business days and respond fully within 2 months.

Step 2 — Médiation de l'Assurance (FFA Médiateur). If the internal response is unsatisfactory or two months pass without resolution, you can escalate to the Médiation de l'Assurance (mediateur-assurance.org) — the free mediation service for insurance disputes under the Code des assurances. The mediator issues a non-binding opinion within 90 days. While not legally binding, around 70% of insurers comply with recommendations.

Note: Mutuelles regulated under the Code de la mutualité have their own mediation pathway through the Médiateur de la Mutualité Française.

Step 3 — Tribunal Judiciaire. If mediation fails, you can file a civil claim at the tribunal judiciaire. For amounts under €10,000, you can use a simplified procedure (procédure simplifiée de recouvrement des petites créances). Legal aid (aide juridictionnelle) is available based on income.

Why French Policyholders Don't Appeal More

France's bureaucratic administrative culture means that many citizens view institutional decisions as final. The complexity of the dual CPAM/mutuelle system also creates confusion about who to appeal to and on what grounds. Many people don't realise that the CRA process is free, mandatory before court proceedings, and surprisingly effective.

Common Reasons for Denied Claims in France

• Medical device or treatment not on the liste des produits et prestations remboursables (LPPR)
• Off-label prescription drug use
• Consultation rate disputes (médecin de secteur 1 vs. 2 vs. 3)
• Prior authorisation (entente préalable) not obtained for listed procedures
• Mutuelle exclusions applied to pre-existing conditions
• Dental or optical claims above the plafond de remboursement

Fight Back With ClaimBack

ClaimBack helps you draft a CRA appeal or mutuelle complaint letter structured around French insurance law and your specific situation.

Start your appeal at ClaimBack

The French system provides multiple free appeal stages — use them before accepting any denial as final.

Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs External Insurance Appeal: What's the Difference?