What Is an HMO? How HMOs Work in Nigeria (2026)

Introduction

A Health Maintenance Organisation (HMO) is a company accredited by the National Health Insurance Authority (NHIA) to collect premiums from members and pay for their care at a defined network of hospitals, clinics and pharmacies. Most private health insurance in Nigeria is delivered through an HMO. You choose a plan, pay a fixed premium (usually annually), and access covered services at the plan’s listed providers, subject to the plan’s benefit limits, waiting periods and exclusions. NHIA supervises HMOs and sets the accreditation and conduct rules they must follow.

HMOs in the Nigerian context

Nigeria’s health insurance system was rebuilt by the National Health Insurance Authority Act 2022, signed into law on 19 May 2022. The Act replaced the older National Health Insurance Scheme (NHIS) with the NHIA, and moved coverage from voluntary to a legal obligation. It also formalised how private HMOs operate alongside public programmes, both accredited and supervised by the same authority. Our NHIA enrolment guide sets out the specific programmes and how to join each one.

The NHIA reports that over 20 million Nigerians are now enrolled in health insurance, with a national target of universal coverage by 2030. Most people still meet their health costs out of pocket, so understanding how an HMO works, and what it does not cover, matters before you decide whether to enrol.

How an HMO works in practice

The mechanism is straightforward:

1. Enrol in a plan. You choose a plan from an NHIA-accredited HMO or through an NHIA public programme. You provide your NIN and, for many private plans, your BVN.

2. Pay the premium. You pay a fixed amount for the cover period, typically annually, monthly or quarterly depending on the HMO. The premium is set by the plan and does not usually change with how often you use the plan within the year.

3. Use the plan’s provider network. You visit a hospital, clinic or pharmacy on the plan’s approved list. Simple services (an outpatient visit at your primary provider, most listed drugs) are usually accessed directly. Higher-value services (specialist consultations, admissions, surgery, scans) typically need pre-authorisation from the HMO.

4. The HMO settles the covered bill. For services inside your benefit schedule and limits, the HMO pays the provider directly. You pay only what falls outside the plan: excluded services, amounts above your limits, or any co-payment named in your plan.

Two things to hold in mind. First, an HMO plan pays for health services, not health outcomes. Second, the plan you signed up for defines the boundary: services outside the schedule, or above the plan’s per-item and annual limits, are your own bill.

Public HMO cover and private HMO plans

NHIA supervises both routes.

• The public route runs through NHIA social health insurance programmes such as the Formal Sector Social Health Insurance Programme (FSSHIP) for government employees, the Organised Private Sector Social Health Insurance Programme (OPSSHIP) for private companies with 5 or more staff, the Group, Individual and Family Social Health Insurance Programme (GIFSHIP) for the self-employed and informal-sector workers, and State Social Health Insurance Agency (SSHIA) schemes for residents of a given state. A Vulnerable Group Fund exists for pregnant women, children, older persons and persons with disability. If you work for yourself, our guide to health insurance for Nigerian freelancers covers how GIFSHIP works in practice.

• The private route is retail cover you or your employer buy directly from an NHIA-accredited HMO. Private plans usually sit in a tier structure (basic, standard, premium and executive tiers under different brand names) with different premiums, provider networks and benefit limits. Our overview of leading NHIA-accredited HMOs listed on nairaCompare describes how the major providers position their retail products.

Both routes deliver care through HMOs and their hospital networks. The main differences are how you enrol, who pays the premium, the benefit package on offer, and the network you can use.

What HMO plans usually cover, and what they usually do not

Every plan is different, but most HMO plans in Nigeria are built around a core package plus optional add-ons.

Typically covered on a mid-tier plan: outpatient consultations at network providers, listed common medications, routine diagnostic tests, immunisation, antenatal and delivery care up to a stated limit, some minor surgeries, and inpatient admissions with a room-type limit. Premium ranges differ widely by tier and provider; our 2026 health insurance cost report lays out indicative annual ranges for individual and family plans.

Commonly excluded or restricted: cosmetic procedures, fertility treatment, dental and optical work beyond a small allowance, some chronic-disease medication above a monthly limit, injuries from illegal activity, and care outside the plan’s approved provider list. Pre-existing conditions are often subject to a waiting period, and some conditions may be excluded on entry-level plans.

Common misconceptions

• “HMO cover means everything is free.” No. It means the plan pays for services inside your schedule at network providers, up to your limits.

• “Any hospital will do.” No. Only the providers listed in your plan’s network at the current date are covered without pre-authorisation.

• “NHIA cover and a private HMO are the same thing.” They are related but not identical. NHIA runs and supervises the system; the actual care is provided by an accredited HMO you or your employer enrolled with, whether through a public programme or the private market.

• “I can enrol today and use it tomorrow.” Most plans have activation lead times and specific benefits with longer waiting periods.

An illustrative example

What to check before you enrol

• Confirm the HMO is currently NHIA-accredited.

• Read the schedule of benefits and exclusions, not just the marketing summary.

• Check the provider network for the hospitals and pharmacies you actually use.

• Note the waiting periods for the benefits you expect to need.

• Confirm the annual limits per service line and whether add-ons are worth it for you.

Our Complete Guide to Comparing Health Insurance Plans walks through every route to cover in more depth. If you already know which HMO plans you are weighing, What to Look for When Comparing Health Insurance or HMO Plans covers the specific criteria to test each plan against, and How You Can Save Money by Comparing HMOs explains where readers typically overpay.

Next step

FAQs

Related Resources

• Your Complete Guide to Comparing Health Insurance Plans in Nigeria (2026 Edition)
• What to Look for When Comparing Health Insurance or HMO Plans
• National Health Insurance Authority (NHIA, formerly NHIS) in Nigeria: A 2026 Enrolment Guide
• Top 10 Health Insurance Plans in Nigeria in 2026 (Affordable & Reliable Options)
• Best Health Insurance Plans for Families in Nigeria (2026)
• Leading NHIA-Accredited HMOs Listed on nairaCompare: Reviewed and Compared (2026)
• Health Insurance for Nigerian Freelancers (A 2026 Guide)
• 2026 Health Insurance Cost Report: Compare and Choose
• How You Can Save Money by Comparing HMOs