Hospital Networks Explained: Why Your HMO May Not Cover Your Preferred Hospital

Introduction

You signed up for an HMO plan, paid your premium, and assumed your favourite hospital would be on the list. Then the receptionist tells you, "We don’t accept that HMO." This guide explains what a hospital network really is, why your preferred facility may not be covered, and what you can do about it. Aimed at salary earners, parents, and individual policyholders trying to make sense of HMO restrictions in Nigeria.

Table of Contents

• Quick Definition
• What Is a Hospital Network and Why It Matters
• How Hospital Networks Are Built
• The Six Reasons Your Hospital May Not Be Covered
• Common Misconceptions
• nairaCompare Insight
• Quick Recap
• FAQs
• Related Resources
• Conclusion

Quick Definition

A hospital network is the list of clinics and hospitals your HMO has signed contracts with to deliver care to its enrolees, and a hospital is excluded when no current contract or tariff agreement exists between the two parties.

What Is a Hospital Network and Why It Matters

Every Health Maintenance Organisation (HMO) operates by pooling premiums from many enrolees and paying healthcare facilities to treat them. The HMO does not own most of these hospitals. Instead, it negotiates contracts with independent providers who agree to serve its members at agreed rates.

The list of those contracted facilities is your hospital network. If a hospital sits outside that list, your HMO has no obligation to pay for care you receive there, even in non-emergency cases. You will likely be asked to pay out of pocket and seek reimbursement, which is rarely successful.

This matters because the network defines what your plan is actually worth. Two enrolees paying ₦200,000 a year on different plans can have very different experiences if one network includes 600 facilities nationwide and the other covers fewer than 100.

How Hospital Networks Are Built

HMO networks are not random. They are assembled through a structured process governed by the National Health Insurance Authority (NHIA) under the NHIA Act 2022.

Step 1: Hospital accreditation. The NHIA accredits hospitals and clinics that meet quality, infrastructure, and personnel standards. Only accredited facilities can be enrolled in any private or public health insurance scheme.

Step 2: HMO negotiation. Each HMO approaches accredited facilities individually and negotiates a contract. Contracts spell out what services the hospital will provide, the agreed tariff for each service, and how often the HMO pays.

Step 3: Capitation or fee-for-service. For primary care, most HMOs pay hospitals a fixed monthly amount per enrolled member (capitation), regardless of whether the member visits or not. For secondary and tertiary care, payment is usually fee-for-service, where the hospital bills the HMO per procedure.

Step 4: Tier mapping. HMOs sort hospitals into tiers, primary, secondary, and tertiary, and map them to plan tiers. A basic plan may give you access only to primary-care clinics, while a premium plan unlocks teaching hospitals and specialist centres.

Step 5: Ongoing review. Contracts are reviewed regularly. The NHIA governs how HMOs and healthcare facilities negotiate and review tariffs under its regulatory framework. When reviews fail, hospitals exit networks.

The Six Reasons Your Hospital May Not Be Covered

1. There Is No Contract Between the Hospital and Your HMO

This is the most common reason. Your preferred hospital may simply have never signed an agreement with your specific HMO. This is especially common with newer specialist hospitals, boutique clinics, and high-end private facilities that prefer to operate on a cash basis or with a small number of premium HMOs only.

2. The Hospital and HMO Disagree on Tariffs

Tariffs are the agreed prices the HMO pays the hospital for each service. When a hospital believes the HMO’s tariff is too low to cover its costs, particularly during periods of high inflation or after equipment imports become more expensive, it may refuse to renew the contract. This is why a hospital that accepted your HMO last year may not accept it this year.

3. Your Plan Tier Does Not Include That Hospital

Most HMOs offer multiple plans. A bronze or basic plan may only include 50 to 150 facilities. A platinum or executive plan can include 500 or more, often featuring teaching hospitals like LUTH, UCH, and ABUTH, as well as premium private hospitals.

If your preferred hospital is on the network list but reserved for a higher tier, your card will be rejected even if the HMO has a relationship with that hospital.

4. Geographic Coverage Limits

Some plans, especially low-cost group plans for SMEs, restrict coverage to a single state or city. Your card may work in Lagos but not in Abuja or Port Harcourt. If you travel within Nigeria for work, this can leave you stranded.

5. The Hospital Has Lost Accreditation or Paused Services

The NHIA can withdraw accreditation from a facility for breaching guidelines, and HMOs can suspend a hospital from their network for issues like delayed claims, poor patient outcomes, or fraud. The hospital may still be open to cash patients but no longer covered by your insurance.

6. Specialty or Procedure Mismatch

A hospital may be in your network for general consultations but not for specific procedures. A common example is a hospital approved for outpatient care but not for surgery, or for adult care but not for paediatrics. Your card works at the front desk, then fails at the surgical unit.

Common Misconceptions

"All HMOs cover the same major hospitals." Untrue. While teaching hospitals are widely covered, mid-tier private hospitals vary significantly across HMOs. A hospital that accepts five HMOs may reject another five.

"If I pay a higher premium, every hospital is automatically included." Higher premiums expand your network, but no plan in Nigeria covers every hospital in the country. Some hospitals operate cash-only by choice.

"In an emergency, any hospital must accept my HMO card." The NHIA Act 2022 requires healthcare providers to stabilise emergency cases regardless of insurance status. However, you may still need to settle the bill out of pocket and seek reimbursement from your HMO if the hospital is not in network.

"My hospital list never changes." Networks are dynamic. Hospitals are added and removed every quarter as contracts are signed, renewed, or terminated. Always check the latest list before booking a procedure.

"NHIA enrolment guarantees access to any private hospital." The NHIA scheme has its own designated facilities. Private HMO plans are separate, and only the hospitals contracted by your specific HMO are accessible to you.

nairaCompare Insight

If you are a salary earner in Lagos or Abuja with a young family, the network depth question matters more than the headline premium. We have seen enrolees pay ₦250,000 a year for a plan that covers 90 facilities and discover that none of them sit within 20 minutes of their home or office. The fix is to compare hospital lists before you compare prices on our platform. Filter by your two or three preferred facilities first, then look at premiums. If your top hospital is consistently in higher-tier plans, paying ₦400,000 for a plan that includes it almost always beats paying ₦250,000 for a plan you cannot comfortably use.

For women managing their own cover, particularly if you are planning a family or have specific gynaecological providers you trust, network checks should also confirm maternity inclusion at your chosen facility. A hospital can be in your network for general care but excluded from maternity benefits, which can mean a ₦600,000 to ₦1,500,000 out-of-pocket bill at delivery. Use our health insurance comparison to filter for plans that cover both your hospital and the specific service you actually need, not just the brand name on the card.

Quick Recap

• A hospital network is the list of clinics your HMO has active contracts with.
• Hospitals fall outside that list because of missing contracts, tariff disputes, plan tier limits, geographic restrictions, lost accreditation, or specialty mismatches.
• Networks change quarterly, so always confirm before booking a procedure.
• Higher tiers expand access, but no plan covers every hospital in Nigeria.
• The NHIA Act 2022 governs how hospitals are accredited and how HMOs negotiate contracts.

FAQs

Can I use a hospital that is not on my HMO list?

Yes, but you will pay out of pocket. Some HMOs offer reimbursement for non-network care under emergency conditions, but the process is paperwork-heavy and not guaranteed.

How often do HMOs update their hospital networks?

Most update at least quarterly, with material changes published on the HMO’s website and member portal. Always check the live list rather than relying on the printed list you received at enrolment.

What does "capitation" mean and why does it affect my hospital choice?

Capitation is a fixed monthly payment your HMO makes to your designated primary-care hospital, whether you visit or not. It influences which hospital you can register as your primary, because the HMO must have a capitation arrangement with that facility.

Can I switch my primary hospital within my HMO plan?

Most HMOs allow this once or twice a year, often during a renewal window. Some allow ad hoc changes if you relocate. Check your member handbook for the exact rules.

Why do some hospitals accept cash but reject HMO cards?

Either there is no contract in place, the HMO owes the hospital for past claims, or the hospital has reached its monthly enrolee cap with that HMO. Cash patients always remain welcome because payment is immediate.

Does the NHIA cover private hospital visits?

The NHIA scheme covers a defined network of accredited facilities, primarily public hospitals and contracted private clinics. It does not give you access to every private hospital in Nigeria.

What should I do if my preferred hospital leaves the network mid-policy?

Contact your HMO immediately to identify the closest alternative facility on the network. If the affected hospital was central to your reason for enrolment, you may be able to negotiate a partial refund or a switch to a higher plan that covers it under a different arrangement.

Conclusion

A hospital network is the single most important feature of any HMO plan, yet it is the one most enrolees skip when comparing options. Premium amounts, brand recognition, and add-on benefits matter, but only after you have confirmed that the hospitals you actually want to visit are inside the network at your plan tier.

Before renewing or signing up, pull up the latest hospital list from each shortlisted HMO, mark your two or three preferred facilities, and only then compare premiums. Use our health insurance comparison tool to filter plans by network depth alongside price, so the cover you pay for is the cover you can actually use.

Terms and conditions apply. Please verify all details with the provider before purchasing.