Nigeria Insurance Claim Denied: How to Appeal Under NAICOM and NHIA

A denied insurance claim in Nigeria is frustrating, but you have rights. Whether your insurer is an HMO under the National Health Insurance Authority (NHIA) or a private insurer supervised by NAICOM, Nigerian law provides a structured path for challenging wrongful denials.

The Nigerian Insurance Landscape

Nigeria's insurance sector is regulated by the National Insurance Commission (NAICOM), established under the National Insurance Commission Act. NAICOM licenses all insurance companies, sets minimum capital requirements, and handles consumer complaints against registered insurers.

Health coverage in Nigeria sits on two pillars. The public side is managed by the National Health Insurance Authority (NHIA), which replaced the old NHIS following the NHIA Act 2022. The NHIA oversees Health Maintenance Organisations (HMOs) that administer benefits for formal sector workers and increasingly for the informal economy. Major HMOs include Hygeia HMO, Reliance HMO, AXA Mansard Health, Total Health Trust, and Clearline International.

The private market includes standalone health insurance policies sold by NAICOM-licensed insurers such as AXA Mansard Insurance, Leadway Assurance, AIICO Insurance, Custodian Life Assurance, and NEM Insurance.

Common Reasons Claims Are Denied in Nigeria

Nigerian policyholders most frequently face denials for:

• Non-pre-authorised treatment: Many HMO plans require prior approval (pre-authorisation) before hospitalisation or specialist consultations. Skipping this step is the leading denial reason.
• Out-of-network providers: If your hospital or doctor is not on the HMO's approved list (panel providers), the claim is typically rejected.
• Exclusions for pre-existing conditions: Policies often exclude conditions diagnosed before the policy start date, sometimes for the first 12 months.
• Incomplete documentation: Missing lab results, discharge summaries, or itemised hospital bills cause many denials.
• Plan benefit limits: Treatment costs that exceed annual or per-condition caps are partially or fully denied.

Step 1: Internal Appeal to the Insurer or HMO

Under the NHIA Act 2022 and NAICOM consumer protection guidelines, you have the right to a formal internal appeal. Act quickly — most policies require you to dispute within 30 days of the denial notice.

Submit a written appeal to the insurer's customer complaints unit. Include:

• A copy of the denial letter
• Your policy certificate and benefit schedule
• Full medical records and doctor's clinical notes supporting necessity
• Itemised bills and receipts
• A clear written statement explaining why the denial should be reversed

Request acknowledgement in writing and keep all correspondence. Insurers are required to respond within a reasonable timeframe, typically 15 working days.

Step 2: Escalate to NAICOM or NHIA

If the internal appeal fails or is ignored, escalate to the relevant regulator.

For private health insurance: File a formal complaint with NAICOM's Consumer Protection Department at its Lagos or Abuja offices. NAICOM can compel the insurer to review the decision and impose sanctions for unjustified denials.

For NHIA/HMO disputes: The Financial Reporting Council (FRC) and NHIA both accept complaints against HMOs. Under the NHIA Act, enrollees can petition the Authority directly. NHIA has regional offices in each geopolitical zone.

Provide copies of all prior correspondence, your policy, and a clear timeline of events.

Step 3: Alternative Dispute Resolution and the Courts

NAICOM encourages Alternative Dispute Resolution (ADR) before litigation. The Chartered Insurance Institute of Nigeria (CIIN) and the Nigerian Insurers Association (NIA) operate mediation services.

If mediation fails, you may sue under the Insurance Act Cap I17 LFN 2004 and the NHIA Act 2022 in the Federal High Court or relevant State High Court. Small claims may be handled in Magistrates' Courts. Consider engaging a lawyer familiar with insurance law for claims above NGN 500,000.

Practical Tips for Nigerian Policyholders

• Always pre-authorise: Call your HMO's pre-authorisation line before any planned procedure, and get the approval code in writing.
• Choose panel providers: Confirm the hospital or clinic is on the insurer's provider list before receiving treatment.
• Document everything: Photograph prescription notes, request stamped hospital summaries, and keep duplicate receipts.
• Know your waiting periods: Many Nigerian policies impose 3–6 month waiting periods for maternity and pre-existing conditions.
• Check the exclusions schedule: Review the exact list of excluded conditions in your certificate of insurance.
• Use social media carefully: NAICOM monitors insurer conduct; public escalation sometimes accelerates resolution, but formal channels carry more legal weight.

Nigeria's insurance penetration is growing, and regulators are increasingly active in consumer protection. You do not have to accept a wrongful denial.

Fight Back With ClaimBack

If your insurer or HMO in Nigeria has rejected your claim, ClaimBack can help you draft a professionally structured appeal letter that references the correct regulations and medical justification.

Start your appeal at ClaimBack

Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Insurance Ombudsman Guide