Insurance Claim Denied in Argentina? How to Appeal

Argentina has one of the most established insurance markets in Latin America, regulated under a legal framework that dates back to the early twentieth century. Yet claim denials remain a persistent challenge for Argentine policyholders. Whether your motor, property, life, health, or accident insurance claim has been rejected, you have formal rights and official channels to challenge that decision.

Why Insurers Deny Claims in Argentina

Argentine insurers deny claims on a range of grounds established under Law No. 17,418 (the Ley de Seguros — Insurance Contract Act) and enforced by the Superintendencia de Seguros de la Nación (SSN).

Non-disclosure (reticencia) is the most commonly cited ground. Under Article 5 of Law 17,418, an insurer can void a policy if the policyholder made incomplete or false declarations at application. However, the non-disclosed information must have been material to the underwriting decision.

Policy exclusions apply when the specific loss falls within an explicitly excluded cause in the policy wording. Argentine policy language must clearly identify exclusions, and courts apply the contra proferentem principle where ambiguity exists.

Aggravation of risk (agravación del riesgo) under Article 37 of Law 17,418 allows insurers to reduce or deny claims where the insured has increased the risk beyond what was disclosed at policy inception.

Late notification under Law 17,418 requires prompt notification of a loss. However, Argentine courts have consistently held that late notification alone does not justify denial unless the insurer suffered actual prejudice from the delay.

Policy lapse due to non-payment of premiums voids coverage and is a straightforward basis for denial, verifiable against your payment records.

Disputed causation and documentation gaps arise when the insurer disputes that the loss was caused by the insured peril, or where supporting evidence is insufficient.

How to Appeal

Step 1: Obtain the Denial in Writing

Request the denial in writing with specific reference to the policy clause or legal provision relied upon. Under SSN standards, insurers must provide substantiated written reasons for any claim rejection. If you received only a verbal denial, demand written confirmation immediately.

Step 2: File a Formal Internal Complaint

Write a formal complaint addressed to the Gerente de Siniestros (Head of Claims) or Gerente General (General Manager) of the insurer. Reference your policy number and número de siniestro (claim number), identify the specific denial ground and your legal or factual arguments against it, and attach all supporting documentation. Send by carta documento (certified mail) — this creates a formal legal record under Argentine law.

Step 3: File a Complaint with the SSN

If the insurer does not resolve your complaint satisfactorily, file a formal complaint with the Superintendencia de Seguros de la Nación (SSN). The SSN was established under Law No. 20,091 and has broad authority over all licensed insurers. File online at argentina.gob.ar/ssn, by phone at 0800 666 8400, or by email at consumidores@ssn.gob.ar. The SSN can investigate and impose fines, revoke licenses, and order settlement of legitimate claims.

Step 4: Invoke the Consumer Protection Code

Argentine policyholders are also protected by Law No. 24,240 (Ley de Defensa del Consumidor). Ambiguous contractual terms are construed against the insurer, abusive clauses are void, and consumers may file complaints with the Dirección Nacional de Defensa del Consumidor or their provincial OMIC office.

Step 5: For Health Plan Disputes, Contact the SSS

Private health insurance (medicina prepaga) disputes fall under the Superintendencia de Servicios de Salud (SSS) regulated by Law No. 26,682, not the SSN. File at sssalud.gob.ar or call 0800 222 72 73 (SALUD).

Step 6: Mediation and Civil Court

Law No. 26,589 requires mandatory mediation before most civil court proceedings in Argentina. If mediation fails, the Civil and Commercial Code and Laws 17,418 and 24,240 together provide the framework for insurance litigation.

What to Include in Your Appeal

• Your policy number, número de siniestro, and full personal identification (CUIL/DNI)
• The carta documento or email record of your formal internal complaint
• Medical records, police reports, expert valuations, or repair estimates addressing the denial grounds
• Premium payment receipts demonstrating the policy was in force at the time of the loss
• Legal argument citing Law 17,418 and the contra proferentem principle where ambiguous clauses are involved

Fight Back With ClaimBack

Argentina's SSN, SSS, and consumer protection framework together provide accessible pathways to challenge unfair denials. Acting promptly and formally is critical — the limitation period for most insurance claims under Argentine law is one to three years from the date of the event. ClaimBack generates a professional appeal letter in 3 minutes. Start your free claim analysis → Free analysis · No credit card required · Takes 3 minutes

Related Reading

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