What Is Health Insurance? Everything You Need to Know in 2026

Health insurance explained clearly. Learn how health insurance works, types of plans, costs, benefits, and how to compare health insurance quotes—especially when moving between states.

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Health insurance is a system designed to help you pay for medical care without bearing the full financial burden alone. You pay a monthly premium, and in return, an insurance company agrees to cover part of your healthcare expenses based on the rules of your policy. For most Americans, health insurance is the primary way to access affordable medical care.

Problems often arise when life changes. Moving to another state, switching jobs, or aging into a new eligibility category can disrupt coverage quickly. Because health insurance in the U.S. depends heavily on state rules, provider networks, and local pricing, a move can mean your old plan no longer works—or no longer exists. This guide explains health insurance from the ground up and shows you how to make informed decisions, especially when relocating between states.

What is health insurance and how does it work?

Health insurance is a contract in which an insurance company agrees to pay part of your medical costs in exchange for a monthly premium. The goal is to protect you from large, unexpected healthcare expenses while giving you access to negotiated provider rates. Instead of paying the full cost of care on your own, you share those costs with the insurer.

Health insurance works through a defined cost-sharing structure. When you receive medical services, the insurer pays a portion of the bill according to your policy, and you pay the remainder. The exact split depends on whether you have met your deductible, whether the provider is in-network, and what type of service you receive.

The core costs that determine what you pay

Every major medical health insurance policy uses the same cost components, even though the dollar amounts vary. The premium is the amount you pay each month to keep coverage active, regardless of whether you use medical services. The deductible is the amount you must pay out of pocket each year before the insurer begins paying for most covered services.

After the deductible, cost sharing usually continues through copayments or coinsurance. A copayment is a fixed dollar amount, such as $40 for a specialist visit, while coinsurance is a percentage of the cost, such as 20%. The out-of-pocket maximum caps how much you pay in a year for covered services, after which the insurer pays 100% of eligible costs.

What happens when you use your insurance

When you visit an in-network provider, the doctor or hospital bills your insurer directly at negotiated rates. The insurer applies your deductible, copay, or coinsurance automatically, and you receive a bill only for your portion. This process reduces both administrative burden and overall cost compared to paying cash.

Out-of-network care works differently. Depending on your plan, the insurer may pay less, require higher cost sharing, or provide no coverage at all except in emergencies. This is one of the most common sources of unexpected medical bills.

Why health insurance changes by state

Federal law establishes baseline consumer protections, but states regulate insurance companies, approve plan offerings, and oversee provider networks. As a result, insurers design plans specifically for each state. Even when the insurer’s name stays the same, coverage rules, networks, and pricing often change when you cross state lines.

Planning to move?

compare interstate health insurance options early so you understand how coverage will change before enrollment deadlines apply.

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What are the main types of health insurance plans?

Health insurance plans differ based on who offers them, how coverage is accessed, and how costs are shared. Understanding these categories helps you narrow your options quickly and avoid plans that do not fit your situation.

Employer-sponsored health insurance

Employer-sponsored health insurance is coverage offered through your job, typically with the employer paying a portion of the premium. These plans often provide broad coverage at a lower monthly cost than individual plans, but benefits and networks vary by employer and state.

If you move to a different state but keep the same employer, your health insurance may change. Some employers offer national networks, while others replace your plan with a state-specific option. You should always confirm network coverage before relocating.

Individual and marketplace health insurance

Marketplace health insurance is purchased through Healthcare.gov or a state-run exchange. These plans follow Affordable Care Act rules and are available to individuals and families without employer coverage. Depending on your income, you may qualify for subsidies that lower monthly premiums or out-of-pocket costs.

Marketplace plans are categorized into Bronze, Silver, Gold, and Platinum tiers. These tiers describe how costs are split between you and the insurer, not the quality of care. Silver plans are the only tier eligible for cost-sharing reductions for lower-income enrollees.

Medicaid and CHIP

Medicaid provides health insurance for low-income adults, children, seniors, and people with disabilities. CHIP covers children in families who earn too much for Medicaid but cannot afford private coverage. Both programs are jointly funded by states and the federal government.

Eligibility, benefits, and enrollment rules vary by state. When you move, Medicaid coverage does not transfer automatically, and you must reapply in your new state.

Medicare

Medicare is a federal health insurance program primarily for people aged 65 and older. While core benefits are standardized, Medicare Advantage and prescription drug plans vary by county and state. A move can affect which plans are available and whether your current plan remains valid.

Short-term and limited-benefit plans

Short-term health insurance offers temporary coverage and does not have to meet ACA standards. These plans may exclude preexisting conditions, mental health care, or prescription drugs. States regulate availability and duration, with some states banning these plans entirely.

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What does a health insurance policy cover and exclude?

A health insurance policy explains exactly which services are covered, limited, or excluded.

Services typically covered

ACA-compliant plans cover:

  • Hospitalization
  • Doctor visits
  • Prescription drugs
  • Mental health care
  • Maternity and newborn care
  • Preventive services at no cost in-network

Common exclusions and limits

Even comprehensive plans often exclude:

  • Cosmetic procedures
  • Experimental treatments
  • Certain alternative therapies

Drug coverage depends on the plan’s formulary. Networks determine which doctors and hospitals are covered.

State-mandated benefits

Some states require additional coverage, such as fertility treatments or autism services. These mandates affect premiums and plan design.

How much does health insurance cost and what affects the price?

Health insurance costs depend on where you live, how old you are, and how your plan is structured.

Major cost drivers

  • Age (within federal limits)
  • Location and local healthcare costs
  • Tobacco use
  • Plan tier and deductible
  • Provider network size

Why moving states changes your cost

Each state has different insurers, provider prices, and regulations. Marketplace subsidies are also tied to local benchmark plans, so your tax credit may increase or decrease after a move.

Common Health Insurance Mistakes When Moving States

Premiums vs total annual cost

A low premium plan can cost more overall if you need frequent care. Total expected annual cost gives a clearer picture.

Always compare health insurance plans by estimated yearly cost, not just monthly price, to avoid unexpected expenses.

Which health insurance companies should you know?

Health insurance companies often operate regionally, even when their brand names are nationally recognized. Coverage details depend on state-specific subsidiaries and networks.

Major national insurers

UnitedHealthcare, Blue Cross Blue Shield affiliates, Aetna, and Cigna operate in multiple states. However, each state’s plans differ in pricing, networks, and covered services. Brand familiarity does not guarantee identical coverage.

Clearing up common misconceptions

State Farm, Progressive, and NEXT Insurance do not sell ACA-compliant major medical health insurance. These companies focus on auto, home, and business insurance and may only offer limited or supplemental health-related products through partners.

Why insurer choice still matters

Beyond price, insurers differ in network size, customer service quality, claims handling, and prescription drug coverage. Choosing an insurer affects your access to care as much as your monthly premium.


How do you get health insurance quotes and compare plans?

Health insurance quotes are estimates of cost based on your age, location, and plan selection. You can obtain them through several channels, but consistent comparison is essential.

Where to get quotes

You can get quotes through Healthcare.gov or your state exchange, directly from insurers, or through licensed agents. Marketplace quotes include subsidies if you qualify, while private quotes may show additional plan options.

How to compare quotes effectively

Start by comparing plans at the same metal tier. Review provider networks carefully to ensure your doctors and hospitals are included. Check drug formularies if you take prescriptions, and compare deductibles and out-of-pocket maximums.

Ready to compare quotes

Use our side-by-side comparison tool to evaluate coverage details before choosing a plan.

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Should you work with a health insurance agent?

A licensed health insurance agent helps you navigate plan options and state-specific rules.

Agents are especially helpful if:

  • You’re moving states
  • You qualify for subsidies
  • You have complex medical needs

Agents are typically paid by insurers, not by you.

Who is health insurance best for (and who is it not best for)?

Health insurance is best for anyone who wants financial protection from medical costs and access to negotiated provider rates. It is particularly important for people with chronic conditions, families, and those who want predictable healthcare expenses.

Short-term or limited-benefit plans may work for brief coverage gaps but are not suitable for long-term care or comprehensive protection. These plans carry higher risk and fewer consumer protections.

Health insurance FAQs

What is health insurance in simple terms?

Health insurance helps pay for medical care by sharing costs between you and an insurance company. You pay monthly premiums and part of the cost of care when you use services. The insurer pays the rest according to your policy rules.

How does health insurance work for beginners?

You enroll in a plan, pay monthly premiums, and use in-network providers for care. Costs are shared through deductibles, copays, and coinsurance until you reach your out-of-pocket maximum. Understanding these terms helps you avoid unexpected bills.

Can I keep my health insurance if I move states?

In most cases, you cannot keep the same plan when you move states. Moving triggers a Special Enrollment Period, allowing you to enroll in a new plan. Networks and state regulations usually require a change in coverage.

What is the best health insurance plan?

There is no single best health insurance plan for everyone. The right plan depends on your health needs, budget, provider preferences, and location. Comparing options carefully leads to better outcomes.

When can I enroll in health insurance?

You can enroll during the annual open enrollment period or after a qualifying life event such as moving, losing job-based coverage, or getting married. Missing these windows can limit your options.

Are health insurance quotes free?

Health insurance quotes are free and do not obligate you to enroll. Getting quotes does not affect your credit score. Comparing multiple quotes helps you understand your options.


Compare Health Insurance Quotes Today

Health insurance becomes more complex when you move, but it does not have to be confusing. Compare multiple health insurance quotes across states and find coverage that fits your needs using Insurine’s interstate comparison tools.

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How Insurine Picks the Best Insurance Companies

Quality Score
User Score

We Use AM Best

AM Best is the primary US insurance-specific rating agency and is widely referenced by:

  • State insurance departments

  • The NAIC

  • Institutional analysts

Ratings from A- to A++ indicate strong to superior claims-paying ability.

*Ratings are not guarantees and may change.

  • Complaint data varies by state and policy type

  • Financial ratings change and should be verified before purchase

  • “Best for” reflects documented strengths, not endorsements

No insurer is universally best. Suitability depends on your age, health, coverage amount, policy type, and state of residence.

What Is NAIC Complaint Data?

The NAIC Complaint Index measures consumer complaints relative to an insurer’s market share:

  • Below industry average = fewer complaints than expected

  • Around industry average = complaints proportional to size

This is more reliable than consumer star ratings because it is standardized, audited, and regulator-maintained.

Exact index values vary by year and state, so we use qualitative positioning to remain accurate.

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