---
title: "Health Maintenance Organization (HMO): Meaning | Riskado"
description: "An HMO is a health plan that generally covers care only from its network. It may require referrals and a service area, with exceptions such as emergency care."
url: "https://riskado.com/insurance-terms/health-maintenance-organization/"
lang: "en"
published: "2026-06-09"
modified: "2026-10-01"
image: "https://riskado.com/og/default.jpg"
alternates:
  es: "https://riskado.com/es/terminos-de-seguros/organizacion-para-el-mantenimiento-de-la-salud.md"
---

# Health maintenance organization

[Life and Health](https://riskado.com/life-and-health-insurance/) · Updated Oct 1, 2026

A health maintenance organization (HMO) is a type of health insurance plan that generally covers care from doctors, hospitals and other providers in its network. It may require you to live or work in its service area, coordinate care through a primary-care provider or get specialist referrals, and it usually does not cover routine out-of-network care.

Also called: hmo, HMO plan, organización para el mantenimiento de la salud

An HMO is a health-plan network type, and its main effect is on which doctors and hospitals your plan will pay for. Routine care usually has to come from the HMO's network, according to [HealthCare.gov (opens in a new tab)](https://www.healthcare.gov/glossary/health-maintenance-organization-hmo/), with emergency care as the standing exception. The label alone does not tell you what a visit costs. That comes from the plan's [deductible](https://riskado.com/insurance-terms/deductible/), copayments, coinsurance, [exclusions](https://riskado.com/insurance-terms/exclusion/) and out-of-pocket limit, set out in its evidence of [coverage](https://riskado.com/insurance-terms/coverage/).

## How costs add up on an HMO plan

A completed [CMS Summary of Benefits and Coverage example (opens in a new tab)](https://www.cms.gov/files/document/samplecompletedsbctemplateaccessibleformatpdf.pdf) shows how cost sharing stacks up for pregnancy care on an illustrative plan with a $500 deductible, a $50 specialist [copay](https://riskado.com/insurance-terms/copay/) and 20% [coinsurance](https://riskado.com/insurance-terms/coinsurance/).

CMS illustrative example: $12,700 of pregnancy care

Hover or tap a row to highlight it.

| Item | Amount |
| --- | --- |
| Total example cost | $12,700 |
| Deductible paid by the patient | $500 |
| Copayments paid by the patient | $200 |
| Coinsurance paid by the patient | $1,800 |
| Excluded or over-limit amounts paid by the patient | $60 |
| Patient total ($500 plus $200 plus $1,800 plus $60) | $2,560 |
| Plan pays ($12,700 minus $2,560) | $10,140 |

This illustration leaves out [premiums](https://riskado.com/insurance-terms/premium/) and assumes in-network care. On an HMO, the network decides whether the plan pays at all, while the cost-sharing terms decide how much you pay when it does.

## Plan features and what each changes

There is no national HMO deductible, copayment, coinsurance, premium or [out-of-pocket maximum](https://riskado.com/insurance-terms/out-of-pocket-maximum/). These are the settings that shape your costs and access.

- **Network and service area.** In-network care gets the plan's contracted benefit, and nonemergency out-of-network care may be excluded or paid only under listed exceptions. A plan may require you to live or work in its service area.
- **Primary-care coordination.** Many HMOs ask you to choose a primary-care provider who coordinates your care.
- **Specialist referrals.** Many HMOs require a referral before specialist care, according to [HealthCare.gov (opens in a new tab)](https://www.healthcare.gov/choose-a-plan/plan-types/), and the plan document lists which services need one.
- **Deductible, copayments and coinsurance.** The deductible is what you pay before the plan pays for services it applies to, a copay is a fixed dollar amount, and coinsurance is a percentage of the allowed amount.
- **Out-of-pocket maximum.** This caps covered cost sharing for the year. Premiums, noncovered services and many out-of-network charges generally fall outside it.
- **Premium.** To compare yearly costs, multiply the monthly premium by 12, according to [HealthCare.gov (opens in a new tab)](https://www.healthcare.gov/choose-a-plan/your-total-costs/).

A [preferred provider organization](https://riskado.com/insurance-terms/preferred-provider-organization/) works differently. A PPO pays less when you use network providers but generally covers out-of-network care at a higher cost and does not require a referral for it. A lower HMO premium can be offset by deductibles, coinsurance, uncovered out-of-network care or travel outside the service area, so the label alone does not settle which plan costs less.

## Where you meet the term

HMOs appear in individual and family health insurance, employer group plans, Medicare Advantage HMO plans, Medicaid managed-care plans and health care center contracts. The term is not used for auto, homeowners, renters, life or ordinary [business insurance](https://riskado.com/insurance-terms/commercial-package-policy/), even when those policies include medical-payment provisions.

You will see it on quotes, enrollment pages, renewal notices, ID cards, provider directories, referral notices, explanations of benefits, claim denials and appeal letters. The evidence of coverage controls over a marketing label, and a directory listing is worth confirming for your plan and date of service, since participation can change.

## How Connecticut and New York regulate HMOs

Connecticut counts an HMO as a health care center under [Conn. Gen. Stat. § 38a-175 (opens in a new tab)](https://www.cga.ct.gov/current/PUB/chap_698a.htm#sec_38a-175) and regulates it as a managed care plan under [Conn. Gen. Stat. § 38a-478 (opens in a new tab)](https://www.cga.ct.gov/current/PUB/chap_700c.htm#sec_38a-478). Every managed care contract delivered or renewed in the state must be written and must state eligibility, copayments, deductibles and other out-of-pocket costs, covered services and exclusions, claims and grievance procedures, the service area and out-of-area benefits, and a grace period of at least ten days for required payments, under [Conn. Gen. Stat. § 38a-478g (opens in a new tab)](https://www.cga.ct.gov/current/PUB/chap_700c.htm#sec_38a-478g). Provider directories and notice when a primary-care provider leaves fall under [Conn. Gen. Stat. § 38a-478d (opens in a new tab)](https://www.cga.ct.gov/current/PUB/chap_700c.htm#sec_38a-478d).

New York regulates HMOs directly under Public Health Law Article 44, which defines them in [Public Health Law § 4401 (opens in a new tab)](https://www.nysenate.gov/legislation/laws/PBH/4401). Members, and prospective members on request before enrolling, must receive written disclosure of covered benefits and exclusions, prior-authorization rules, appeal rights, their share of premiums and cost sharing, responsibility for out-of-network and unauthorized care, emergency procedures and how to reach primary and specialty providers, under [Public Health Law § 4408 (opens in a new tab)](https://www.nysenate.gov/legislation/laws/PBH/4408). When a referral is denied or a benefit is ruled out, the HMO must give written notice of its grievance procedure, which must be reasonably accessible to people who do not speak English, under [Public Health Law § 4408-a (opens in a new tab)](https://www.nysenate.gov/legislation/laws/PBH/4408-A%2A2).

## Questions to ask an agent or insurer

1.  Which doctors, hospitals, pharmacies and specialists are in-network for this exact plan and effective date? Routine out-of-network care may not be covered, and directories change.
2.  Do I need a primary-care referral for each specialist, test, procedure or facility? Missing a required referral can affect payment, according to [HealthCare.gov (opens in a new tab)](https://www.healthcare.gov/glossary/referral/).
3.  What are the deductible, copayment, coinsurance and out-of-pocket maximum for the care I expect to use? The HMO label does not set those dollar amounts.
4.  What happens if I am outside the service area, need emergency care or cannot get medically necessary care in-network? Emergency and access exceptions vary by plan and state.
5.  Which document controls if the quote, directory, member card and evidence of coverage differ? The contract or evidence of coverage states the actual benefits, referral rules and claim procedures.

## Frequently asked questions

These questions come up most during enrollment and after a surprise bill.

### Will my HMO pay if needed care is not available in its network?

Some states build in that exception. Texas, for example, allows out-of-network care when needed care is unavailable in the network, according to the [Texas Department of Insurance (opens in a new tab)](https://tdi.texas.gov/pubs/consumer/cb069.html). Ask your plan how to request it before you get the care.

### Does every HMO require a referral for every specialist visit?

No. Referrals are required in many HMOs, not all, and the plan document lists which services need one. If a required referral is missing, the claim may be denied or paid differently.

### What document tells me what my HMO pays?

The evidence of coverage, policy or certificate, Summary of Benefits and Coverage, member handbook and any endorsements carry the benefit and cost-sharing details. If they conflict, the contract provisions the plan identifies, or applicable law, control.

### What is an HMO called in Spanish?

Organización para el mantenimiento de la salud, often shortened to HMO por sus siglas en inglés. Spanish documents may call a specialist referral a referido or a derivación.

## Related terms