Learn what is medical health insurance means, how it works, what it covers, common costs, plan types, networks, and how to choose coverage in the U.S.
Note: “Medical health insurance” is commonly used to mean health insurance or medical insurance. In the U.S., health insurance is generally a contract that helps pay covered healthcare costs in exchange for a premium and other applicable cost-sharing.
What Is Medical Health Insurance?
Medical health insurance is coverage that helps pay for eligible healthcare services and medical expenses. You generally pay a premium to maintain coverage, while the insurance plan pays part of the cost of covered care according to the terms of your policy. You may also have to pay deductibles, copayments, coinsurance, or other out-of-pocket costs.
Health insurance can help pay for things such as:
- Doctor visits
- Hospital care
- Prescription medications
- Preventive services
- Laboratory services
- Emergency care
- Certain surgeries and procedures
- Mental health services
- Rehabilitation services
What a particular plan covers—and how much you pay—depends on the plan.
That’s why understanding the insurance policy itself is more important than simply knowing the name of the insurance company.
How Does Medical Health Insurance Work?
Health insurance works by sharing the financial cost of healthcare between you and the insurance plan.
A simplified example looks like this:
- You enroll in a health insurance plan.
- You pay a premium to keep the coverage active.
- You receive covered healthcare services.
- You pay any applicable deductible, copay, or coinsurance.
- The insurance company pays its portion according to the plan.
- You remain responsible for eligible costs that the plan does not cover.
The exact process varies by plan.
The National Association of Insurance Commissioners explains that health insurance generally involves paying a monthly premium while the insurer helps cover healthcare expenses such as doctor visits, hospital stays and prescriptions.
Why Do People Need Medical Health Insurance?
Healthcare can be expensive, particularly when someone needs hospitalization, surgery, ongoing treatment, specialist care, or expensive medications.
Health insurance provides financial protection by helping cover eligible medical expenses instead of requiring you to pay the entire covered cost yourself.
It can also provide access to negotiated rates through an insurer’s provider network.
For example, an in-network provider may have a contractual rate with your health plan, potentially reducing the amount you pay compared with receiving care outside the network, depending on the plan.
Health insurance can therefore provide two important forms of protection:
- Financial protection from potentially large covered medical bills
- Access to covered healthcare services under the terms of the plan
What Does Medical Health Insurance Cover?
Coverage depends on the specific policy.
For ACA Marketplace plans, the Affordable Care Act requires coverage of 10 categories of essential health benefits.
These include:
- Ambulatory patient services
- Emergency services
- Hospitalization
- Pregnancy, maternity and newborn care
- Mental health and substance-use disorder services
- Prescription drugs
- Rehabilitative and habilitative services
- Laboratory services
- Preventive and wellness services
- Pediatric services
Not every health insurance policy is subject to exactly the same requirements, so consumers should review the benefits of the specific plan they are considering.
What Does Health Insurance Usually Not Cover?
Health insurance does not necessarily pay for every healthcare expense.
Depending on the plan, exclusions or limitations may apply to certain:
- Cosmetic procedures
- Experimental or investigational treatments
- Services that aren’t medically necessary under the plan’s rules
- Out-of-network services
- Certain elective services
- Services excluded by the policy
Some plans may have additional limitations or authorization requirements.
Never assume that a medical service is covered simply because it is medically related.
Check the plan’s benefits and exclusions before receiving expensive care.
What Are the Main Costs of Medical Health Insurance?
Understanding health insurance costs is essential because the premium is only one part of what you may pay.
The major terms include:
Premium
A premium is the amount you pay to maintain your health insurance coverage.
It is commonly paid monthly, although payment arrangements can vary.
You generally pay the premium whether or not you use medical services during that period.
Deductible
A deductible is the amount you may have to pay for certain covered healthcare services before the plan begins paying according to its terms.
For example, suppose a plan has a $2,000 deductible.
That doesn’t necessarily mean every medical service requires you to pay the full $2,000 first. Some services may have different cost-sharing rules.
Always check the specific plan.
Copayment
A copayment, or copay, is generally a fixed amount you pay for a covered healthcare service.
For example, a plan might charge a specified copay for a primary-care visit.
The amount depends on the plan.
Coinsurance
Coinsurance is generally your percentage share of the allowed cost of a covered service after applicable deductible requirements are met.
For example, if your plan requires 20% coinsurance for a particular covered service, you could pay 20% of the applicable allowed amount while the plan pays its share.
Out-of-Pocket Maximum
The out-of-pocket maximum limits what you pay for covered services during a plan year under the applicable plan rules.
It is important because it can help you understand your potential financial exposure if you require substantial covered healthcare.
The out-of-pocket maximum is not the same as the deductible.
Health Insurance Cost Example
Imagine a hypothetical plan with:
| Cost | Example |
| Monthly premium | $400 |
| Annual deductible | $2,500 |
| Primary-care copay | $30 |
| Specialist copay | $60 |
| Coinsurance | 20% |
| Out-of-pocket maximum | $7,500 |
This does not mean you’ll automatically spend $7,500 every year.
Your actual spending depends on:
- How much healthcare you use
- Which services you receive
- Whether providers are in network
- Whether services are subject to the deductible
- Your prescriptions
- Applicable copays and coinsurance
The example simply demonstrates why looking at the premium alone can give you an incomplete picture.
What Are the Different Types of Medical Health Insurance?
There are several ways Americans can obtain health coverage.
Employer-Sponsored Health Insurance
Many people receive health insurance through an employer.
The employer may pay some or all of the premium, while the employee contributes the remaining amount.
Employer plans can vary substantially in:
- Premiums
- Deductibles
- Networks
- Prescription coverage
- Copays
- Coinsurance
- Family coverage
Marketplace Health Insurance
People who purchase individual or family coverage can shop through the Health Insurance Marketplace.
Depending on circumstances, consumers may qualify for financial assistance.
HealthCare.gov provides tools for comparing Marketplace plans and estimating prices.
Some states operate their own Marketplace websites.
Medicare
Medicare is federal health coverage primarily serving people who meet specific eligibility requirements, including many adults age 65 and older.
Medicare has different parts and coverage options, so it should not be treated as identical to an ACA Marketplace plan.
Medicaid
Medicaid is a joint federal and state program providing health coverage to eligible people.
Eligibility and program details can vary by state.
CHIP
The Children’s Health Insurance Program, or CHIP, provides coverage for eligible children in qualifying families.
Eligibility rules vary.
What Are HMO, PPO, EPO and POS Plans?
The type of health plan can influence how you access providers and what you pay.
HMO
A Health Maintenance Organization (HMO) generally emphasizes care through a defined network of providers.
Some HMO plans also use primary-care physicians and referral requirements for certain specialist services.
PPO
A Preferred Provider Organization (PPO) generally gives members more flexibility in choosing providers.
Depending on the plan, you may receive some out-of-network coverage, although it can cost more.
EPO
An Exclusive Provider Organization (EPO) generally requires members to use the plan’s network except in situations specified by the plan, such as emergencies.
POS
A Point of Service (POS) plan combines certain features of managed-care and network-based plans.
The exact rules vary.
The important point: Don’t choose a plan type based only on its name. Read the actual network and cost-sharing rules.
What Is a Health Insurance Network?
A provider network is a group of doctors, hospitals, pharmacies and other healthcare providers that have a contractual relationship with the health plan.
In-network providers generally cost less than out-of-network providers under many plans.
Before enrolling, check whether your:
- Primary-care doctor
- Specialists
- Preferred hospital
- Pharmacy
- Laboratory
- Other important providers
are included in the specific network for the plan you’re considering.
Don’t simply ask whether a doctor “accepts” the insurance company.
The provider needs to participate in the relevant network for your particular plan.
What Is an Insurance Deductible vs. Premium?
These two terms are often confused.
Premium
What you pay to maintain your coverage.
Deductible
What you may have to pay for certain covered services before the plan begins paying according to its terms.
You can have a low premium with a relatively high deductible or a higher premium with a lower deductible.
That’s why comparing only monthly premiums can be misleading.
What Is a Copay vs. Coinsurance?
They are both forms of cost-sharing, but they work differently.
Copay: Usually a fixed dollar amount.
Coinsurance: Usually a percentage of the applicable allowed amount.
For example, a hypothetical plan might have:
- $30 primary-care copay
- $50 specialist copay
- 20% coinsurance for certain hospital services
Your actual plan may use different amounts or apply the deductible before cost-sharing begins.
What Is an Out-of-Pocket Maximum?
An out-of-pocket maximum is a limit on what you pay for covered services during a plan year, subject to the plan’s rules.
This number is especially important when comparing plans because a serious illness or injury could result in significant healthcare spending.
When evaluating a plan, look at:
Premium + expected healthcare spending + potential out-of-pocket exposure
rather than looking only at the monthly premium.
What Is Preventive Care?
Preventive care is healthcare intended to help prevent illness or identify health problems early.
Depending on the type of coverage and applicable rules, certain preventive services may be covered without cost-sharing when provided by an in-network provider.
Examples can include:
- Certain vaccinations
- Screening tests
- Preventive visits
- Counseling services
Coverage rules vary, so check your plan and applicable federal requirements.
Does Health Insurance Cover Prescription Drugs?
Many health insurance plans include prescription drug coverage, but the amount you pay depends on the plan.
Plans often organize medications into different formulary tiers.
Before choosing a plan, check:
- Whether your medication is covered
- Which tier it occupies
- Your expected copay or coinsurance
- Whether prior authorization applies
- Whether quantity limits apply
- Which pharmacies are in network
A plan with a low premium may not necessarily be the cheapest choice for someone who takes several expensive medications.
What Is a Health Insurance Formulary?
A formulary is the list of prescription drugs covered by a health plan.
Different plans can have different formularies.
If you regularly take prescription medication, reviewing the formulary before enrolling can prevent unpleasant surprises later.
What Is the Summary of Benefits and Coverage?
The Summary of Benefits and Coverage (SBC) is a standardized document designed to make health plans easier to understand and compare.
It summarizes important information about:
- Covered services
- Deductibles
- Copays
- Coinsurance
- Out-of-pocket limits
- Other plan features
The NAIC recommends using the SBC when shopping for health insurance because the standardized format makes comparing plans easier.
Where Can You Get Medical Health Insurance?
Depending on your circumstances, you may obtain coverage through:
- An employer
- A spouse’s employer
- The Health Insurance Marketplace
- Medicare
- Medicaid
- CHIP
- A private insurer
- A licensed insurance agent or broker
- Other qualifying coverage arrangements
The right option depends on your eligibility, employment situation, age, income, location and other factors.
How Do You Choose Medical Health Insurance?
Start with your actual healthcare needs rather than choosing a company based on advertising.
1. List Your Doctors
Write down the providers you want to continue seeing.
2. Check Your Medications
Make sure your regular prescriptions are covered.
3. Compare Premiums
Calculate the annual premium rather than looking only at the monthly amount.
4. Compare Deductibles
Understand what you may need to pay before certain benefits apply.
5. Check Copays and Coinsurance
These can substantially affect your costs when you use healthcare.
6. Check the Out-of-Pocket Maximum
This helps you understand your potential financial exposure.
7. Review the Network
Make sure your preferred doctors and hospitals are included.
8. Read the Plan Documents
Don’t rely solely on an advertisement or summary on an insurer’s website.
A Simple Health Insurance Comparison Checklist
Before enrolling, ask:
- What is my monthly premium?
- What is my annual deductible?
- What is my out-of-pocket maximum?
- Are my doctors in network?
- Is my preferred hospital in network?
- Are my prescriptions covered?
- How much are specialist visits?
- How much will I pay for emergency care?
- What happens if I use an out-of-network provider?
- Are referrals required?
- Which preventive services are covered?
- Are there prior authorization requirements?
- Can I afford the plan if I need significant medical care?
If you don’t know the answers, obtain the plan’s Summary of Benefits and Coverage and review it before enrolling.
Is Medical Health Insurance the Same as Health Insurance?
In everyday language, medical health insurance and health insurance generally refer to the same broad concept: insurance coverage that helps pay for healthcare and medical expenses.
“Medical insurance” is also commonly used.
There can be differences among specific insurance products, however, so the exact policy matters more than the terminology.
The National Association of Insurance Commissioners describes health insurance as coverage that helps consumers pay for medical care, generally involving premiums and additional out-of-pocket costs.
Is Health Insurance the Same as a Discount Plan?
No.
A health insurance policy and a healthcare discount plan are different products.
The NAIC cautions consumers that some products marketed as alternatives to health insurance—including discount plans and certain healthcare-sharing arrangements—may not provide the same coverage or consumer protections as health insurance.
Before buying a product marketed as “health coverage,” verify what it actually is.
What Is Major Medical Insurance?
Major medical insurance, sometimes called comprehensive health insurance, is designed to provide broader coverage for a range of healthcare services.
It generally provides benefits for multiple categories of medical care rather than simply offering a discount on individual services.
Major medical plans can include cost-sharing such as:
- Deductibles
- Copays
- Coinsurance
- Out-of-pocket maximums
The specific benefits and protections depend on the type of plan and applicable regulations.
Common Health Insurance Mistakes to Avoid
Choosing the Lowest Premium Automatically
A lower premium may come with higher cost-sharing.
Ignoring the Provider Network
Your preferred doctor may not be covered under the specific plan.
Forgetting Prescription Coverage
Medication costs can make a major difference in total healthcare spending.
Confusing the Deductible With the Out-of-Pocket Maximum
They are different limits with different purposes.
Assuming Every Medical Service Is Covered
Coverage is determined by the plan’s terms.
Not Reading the SBC
The Summary of Benefits and Coverage is one of the most useful documents for comparing plans.
Buying a Product Without Checking Whether It Is Insurance
Some healthcare products may look similar to insurance but don’t provide the same protections.
Medical Health Insurance at a Glance
| Term | Simple Meaning |
| Premium | Amount paid to maintain coverage |
| Deductible | Amount you may pay for certain covered services before the plan pays according to its terms |
| Copay | Fixed amount you pay for a covered service |
| Coinsurance | Percentage of the allowed cost you pay for a covered service |
| Out-of-pocket maximum | Limit on covered cost-sharing during the plan year under the plan’s rules |
| Network | Providers participating in the plan |
| Formulary | List of covered prescription drugs |
| HMO | Network-focused health plan structure |
| PPO | Plan structure generally offering more provider flexibility |
| EPO | Plan generally requiring in-network care except specified circumstances |
| POS | Plan combining certain managed-care and network features |
| SBC | Standardized Summary of Benefits and Coverage |
Frequently Asked Questions
What is medical health insurance in simple words?
Medical health insurance is coverage that helps pay for eligible healthcare expenses. You generally pay a premium, and the insurance plan pays part of covered medical costs according to its rules. You may also have deductibles, copays and coinsurance.
Why is medical health insurance important?
Health insurance can help protect you from potentially large covered medical expenses and provide access to healthcare through the plan’s network.
What does medical health insurance cover?
Coverage depends on the policy. It can include doctor visits, hospital care, prescription drugs, preventive services, emergency care and other healthcare services.
How much does health insurance cost?
There is no single price. Premiums and other costs depend on factors such as the plan, location, age, coverage type, household circumstances and eligibility for financial assistance.
What is a health insurance premium?
A premium is the amount you pay to maintain health insurance coverage, commonly on a monthly basis.
What is a deductible in health insurance?
A deductible is the amount you may have to pay for certain covered healthcare services before the plan begins paying according to its terms.
What is a copay?
A copay is generally a fixed amount you pay for a covered healthcare service.
What is coinsurance?
Coinsurance is generally the percentage of the applicable allowed cost of a covered service that you pay after applicable deductible requirements are satisfied.
What is an out-of-pocket maximum?
An out-of-pocket maximum is a limit on what you pay for covered services during a plan year, subject to the plan’s applicable rules.
What is the difference between medical insurance and health insurance?
The terms are commonly used interchangeably in everyday conversation. Both generally refer to insurance that helps pay for healthcare and medical expenses.
Can I get health insurance without an employer?
Yes. Depending on your circumstances, you may qualify for Marketplace coverage, Medicaid, Medicare or other coverage options. You may also be able to purchase individual coverage directly from an insurer or through an agent or broker.
What is the best health insurance plan?
There is no single best plan for everyone. The right plan depends on your healthcare needs, providers, medications, budget, network preferences and eligibility.
Does health insurance cover prescriptions?
Many health insurance plans include prescription drug coverage, but the drugs covered and your cost can vary by plan.
What is a health insurance network?
A network is a group of healthcare providers and facilities that have a contractual relationship with the health plan. In-network care generally costs less under many plans.
Friendly Summary
Medical health insurance is coverage that helps pay for eligible healthcare and medical expenses. Consumers generally pay a premium to maintain coverage, while the health plan pays part of covered expenses according to its terms. Consumers may also pay deductibles, copays, coinsurance and other applicable costs.
Health insurance can be obtained through employers, the Marketplace, Medicare, Medicaid, CHIP and other sources. Plans differ in their provider networks, covered services, prescription benefits and cost-sharing.
When comparing plans, consumers should look beyond the premium and evaluate the deductible, copays, coinsurance, out-of-pocket maximum, provider network, prescription coverage and benefits.
Disclaimer: This article provides general educational information and is not individualized medical, insurance, financial or legal advice. Health insurance benefits, costs, eligibility, provider networks and coverage rules vary by plan and location. Review official plan documents and current government resources before making healthcare or insurance decisions.
