Health Insurance can look complicated when you first see terms such as premium, deductible, copayment, coinsurance, provider network, claim, and out-of-pocket maximum. But the basic idea is easier to understand when you look at how these pieces work together. You pay for health coverage, usually through a premium. When you receive covered healthcare, you and your health plan may share the cost according to the plan’s rules. The amount you pay can depend on your deductible, copayments, coinsurance, provider network, and other requirements.
This guide explains how health insurance works in the USA, from choosing a plan to receiving medical care and understanding what you may have to pay.
How Does Health Insurance Work?
Health insurance works by sharing eligible healthcare costs between you and your health plan. You generally pay a premium to keep your coverage active. When you need healthcare, your plan may pay part of the cost while you pay your required share.
Your portion can include:
- Deductibles
- Copayments
- Coinsurance
- Other eligible out-of-pocket expenses
The exact amount depends on your specific health plan. For example, one plan may have a relatively low monthly premium but a higher deductible, while another may have a higher premium and lower cost sharing when you receive medical care. HealthCare.gov recommends looking beyond the monthly premium and considering the total yearly costs of a health plan when comparing coverage.
Source: healthcare.gov
The Basic Health Insurance Process
Although plans can differ, the process generally follows a similar pattern.
- Choose or receive a health insurance plan.
- Pay the required premium.
- Use covered healthcare services.
- Follow the plan’s provider-network and coverage rules.
- Pay your required portion of the cost.
- Your insurance company pays its share of covered expenses.
- Your payments may count toward your deductible and out-of-pocket maximum, depending on the expense and plan. Understanding each stage makes health insurance much easier to follow.
Step 1: You Enroll in a Health Insurance Plan
The first step is obtaining health coverage. People in the United States can get health insurance through several sources, including:
- An employer
- The Health Insurance Marketplace
- Medicare
- Medicaid
- The Children’s Health Insurance Program (CHIP)
- Other qualifying coverage arrangements
The enrollment process depends on the type of coverage.
Employer Health Insurance
If your employer offers health benefits, you may be able to enroll during the employer’s designated enrollment period or after experiencing a qualifying life event, depending on the plan’s rules. Your employer may pay part of the premium, while you pay the remaining amount through payroll deductions.
Marketplace Health Insurance
Individuals and families who purchase their own coverage may use the Health Insurance Marketplace. Depending on where you live, you may use HealthCare.gov or a state-based Marketplace. Marketplace eligibility and financial assistance depend on your circumstances and applicable rules.
Government Health Programs
Medicare, Medicaid, and CHIP have their own eligibility and enrollment requirements. For example, Medicare is a federal health insurance program, while Medicaid is administered under federal and state rules.
Step 2: You Pay Your Health Insurance Premium
A premium is the amount you pay to maintain your health insurance coverage. For many individual health plans, the premium is paid monthly. You generally have to continue paying the required premium even when you do not visit a doctor or use healthcare services.
Does the Premium Pay Your Medical Bills?
Not by itself. The premium pays for having the health coverage. It does not necessarily pay the entire cost of every medical service you receive. You may still have a deductible, copayments, coinsurance, or other cost-sharing responsibilities. This distinction is important because someone could pay thousands of dollars in annual premiums and still have additional healthcare expenses during the year.
Step 3: You Receive Medical Care
When you need healthcare, you visit a doctor, hospital, pharmacy, laboratory, or another healthcare provider. Whether the service is covered and how much you pay can depend on several factors.
Is the Service Covered?
First, the service generally needs to be covered under your plan. Health insurance plans can have exclusions and limitations, so you should not assume that every medical service is covered.
Is the Provider in Your Network?
Your plan may have a network of doctors, hospitals, pharmacies, and other healthcare providers. Using an in-network provider can result in different costs from using an out-of-network provider, depending on the type of plan. CMS explains that health plans can differ in their provider networks, benefits, and cost-sharing arrangements.
Source: cms.gov
Does the Service Require Prior Authorization?
Some health plans require approval from the insurance company before certain services or treatments are provided. This is called prior authorization. If your plan requires prior authorization and you receive a service without following the required process, your coverage or payment can be affected, subject to the plan’s rules.
Step 4: You May Pay Your Deductible
A deductible is the amount you may have to pay for certain covered healthcare services before your plan begins paying its share. For example, suppose your plan has a $2,000 deductible. If you receive $1,000 of eligible services subject to the deductible, you may have to pay that $1,000 yourself. If you later receive another $2,000 in eligible expenses subject to the deductible, you may pay the remaining $1,000 needed to meet the deductible. After that, the plan’s cost-sharing rules may apply. Not every service necessarily works this way. Some plans cover certain services before the deductible.
HealthCare.gov explains that some health plans provide certain benefits before the deductible is met and that preventive services may be covered without cost sharing when applicable.
Source: healthcare.gov
Step 5: Your Plan May Use Copayments
A copayment, or copay, is generally a fixed amount you pay for a covered service.
For example, your plan might charge:
- $25 for a primary-care visit
- $50 for a specialist visit
- $40 for an urgent-care visit
- A different amount for prescription drugs
The actual amounts depend on the plan.
Do Copays Apply Before the Deductible?
Sometimes. Some plans have copayments for certain services before the deductible, while other services may be subject to the deductible first. Always check the specific plan documents rather than assuming that every copay works the same way.
Step 6: Your Plan May Use Coinsurance
Coinsurance is generally a percentage of the applicable cost of a covered service that you pay after meeting applicable deductible requirements. For example, suppose your plan has 20% coinsurance. If the applicable allowed amount for a covered service is $1,000, your share could be $200 while the plan pays $800, assuming the service is subject to that coinsurance and all other plan requirements are satisfied. The actual amount can vary depending on the allowed amount, provider network, deductible, and other plan terms.
Step 7: The Insurance Company Processes the Claim
After you receive medical care, the healthcare provider generally submits a claim to the insurance company. A claim is a request for payment for healthcare services covered under an insurance plan. The insurer reviews the claim and determines how it should be handled under the plan.
What Does the Insurance Company Check?
The insurer may consider factors such as:
- Whether the person was covered on the date of service
- Whether the service is covered
- Whether the provider is in the network
- The allowed amount for the service
- Whether the deductible has been met
- The applicable copayment or coinsurance
- Whether prior authorization was required
- Whether other plan conditions apply
The result is reflected in the claim information and the explanation of benefits.
What Is an Explanation of Benefits?
An Explanation of Benefits, commonly called an EOB, is a document from your health insurance company explaining how a medical claim was processed. An EOB is not normally a bill.
It can show information such as:
- The healthcare service
- The amount billed by the provider
- The amount allowed by the plan
- The amount paid by the insurer
- Your deductible amount
- Your coinsurance
- Your copayment
- The amount you may owe the provider
Why Should You Read Your EOB?
Reading the EOB can help you understand how your insurance company calculated its payment. If the provider’s bill does not appear to match the EOB, contact the provider or insurance company before assuming the amount is correct.
What Is the Allowed Amount?
The allowed amount is generally the maximum amount a health plan recognizes for a covered service when calculating its payment and your cost sharing. It can also be described using terms such as negotiated rate or payment allowance. For an in-network provider, the provider’s contract with the insurer generally determines the negotiated amount.
Why Does the Allowed Amount Matter?
Coinsurance is often calculated using the allowed amount rather than simply the provider’s original charge. For example, a provider might charge $1,500 for a service while the health plan’s allowed amount is $1,000. If your plan requires 20% coinsurance on the $1,000 allowed amount, your coinsurance could be $200, subject to the plan’s terms.
What Happens When You Reach Your Deductible?
Reaching your deductible does not necessarily mean that your healthcare becomes completely free. After the deductible is met, you may still have:
- Copayments
- Coinsurance
- Other eligible cost-sharing expenses
For many plans, these costs continue until you reach the applicable out-of-pocket maximum.
What Happens When You Reach Your Out-of-Pocket Maximum?
The out-of-pocket maximum is the limit on what you pay for covered services during a plan year, subject to the plan’s rules. After reaching the applicable maximum, a health plan generally pays 100% of covered benefits for the remainder of the plan year. However, the out-of-pocket maximum does not necessarily include every healthcare-related expense. HealthCare.gov notes that premiums, services the plan does not cover, and certain out-of-network costs generally do not count toward the Marketplace out-of-pocket limit.
Source: healthcare.gov
A Complete Example of How Health Insurance Works
Let’s put the major concepts together. Imagine you have a health plan with:
- Monthly premium: $400
- Annual deductible: $2,000
- Primary-care copay: $30
- Coinsurance: 20%
- Out-of-pocket maximum: $6,500
First Medical Visit
You visit your primary-care doctor and the plan requires a $30 copay for that service. You pay $30 according to the plan’s cost-sharing rules.
Later Hospital Treatment
You then receive covered hospital care that is subject to your deductible. You may have to pay eligible expenses toward the remaining deductible before coinsurance begins.
After the Deductible
Once you meet the $2,000 deductible, your plan may require you to pay 20% coinsurance for certain covered services. The insurer pays its share according to the plan.
After You Reach the Out-of-Pocket Maximum
If your qualifying cost-sharing expenses eventually reach the $6,500 out-of-pocket maximum, the plan generally pays 100% of covered benefits for the remainder of that plan year. This is a simplified example. Actual health plans can have different deductibles, copays, coinsurance, exclusions, networks, and maximums.
How Health Insurance Works With In-Network Care
Health insurance plans often negotiate rates with participating healthcare providers. When you use an in-network provider, the provider generally agrees to the plan’s negotiated terms. This can affect how much you pay for covered services.
Why You Should Check Your Network Before an Appointment
Before receiving non-emergency care, check whether the doctor or facility is in your plan’s network. You can usually check through your insurer’s provider directory or by contacting the provider and insurance company. Because provider networks can change, it can be useful to verify network participation before expensive or planned treatment.
How Health Insurance Works With Out-of-Network Care
Out-of-network rules depend heavily on the plan type. Some plans provide benefits for out-of-network care, while others may provide little or no coverage for certain non-emergency out-of-network services. Out-of-network care can also expose you to higher costs. Before receiving planned care outside your network, review your plan’s rules and ask the insurer what your expected cost may be.
How Emergency Care Works
Emergency situations can have different protections and rules from routine healthcare. Under federal law, the No Surprises Act provides certain protections against unexpected out-of-network bills for covered emergency services and certain other services at in-network facilities. The exact protections depend on the circumstances and applicable requirements. The Centers for Medicare & Medicaid Services provides consumer information about these federal protections. In an emergency, seek appropriate medical care rather than delaying treatment to check your network status.
How Health Insurance Works With Prescription Drugs
Prescription coverage can be another important part of a health plan. Plans may use formularies, which are lists of prescription drugs covered by the plan. A plan may divide medications into different cost-sharing tiers.
What Should You Check?
If you take prescription medication regularly, check:
- Whether your medication is covered
- Which drug tier applies
- Your expected copayment or coinsurance
- Whether a deductible applies
- Whether prior authorization is required
- Whether there are quantity limits
- Which pharmacies are in the network
Checking these details before enrolling can prevent unexpected costs later.
How Preventive Care Works With Health Insurance
Preventive care is intended to help prevent illness or identify certain health conditions early. Marketplace plans cover certain preventive services without cost sharing when the applicable requirements are met. However, the way a service is classified and the circumstances in which it is provided can affect cost sharing.
HealthCare.gov provides current information about preventive services and the circumstances in which they may be covered without cost sharing.
Source: healthcare.gov
How Health Insurance Works When You Change Jobs
If you receive health insurance through an employer and leave that job, your employer-sponsored coverage may end according to the plan’s rules. You may have options for obtaining other coverage. Depending on your circumstances, possibilities can include:
- Coverage through a new employer
- Marketplace coverage
- COBRA continuation coverage when applicable
- Medicaid or CHIP if eligible
- Other qualifying coverage
A job loss or change in employment can create a special enrollment opportunity for Marketplace coverage in qualifying circumstances.
How Health Insurance Works During a Move
Moving to another state can affect your health insurance options and provider network. Marketplace coverage is generally based on your state of residence, and moving can sometimes qualify you for a Special Enrollment Period if you meet the applicable requirements. Before moving, check how the change affects your current plan and whether you need to enroll in new coverage.
What Happens If You Do Not Pay Your Health Insurance Premium?
If required premiums are not paid, coverage can eventually be terminated according to the plan’s rules and applicable law. Marketplace plans can have a grace period when certain conditions are met, including situations involving premium tax credits. Because the consequences can be significant, contact your insurer or Marketplace promptly if you are having difficulty paying your premium.
What Happens If Health Insurance Denies a Claim?
A claim denial does not necessarily mean the issue is over. Your explanation of benefits or denial notice should provide information about the decision and may explain your rights to appeal. Depending on the situation, you may be able to request an internal appeal and, when applicable, an external review. The specific process and deadlines depend on the plan and applicable rules.
Common Reasons for Claim Denials
A claim may be denied for reasons such as:
- The service is not covered
- Prior authorization was required
- The service was considered not medically necessary under the plan
- The provider was out of network
- Information on the claim was incorrect or incomplete
- The plan’s coverage requirements were not satisfied
If you believe a claim was incorrectly denied, review the denial notice and follow the appeal instructions provided by your plan.
How to Keep Track of Your Health Insurance Costs
Keeping basic records can make health insurance easier to manage.
Consider keeping:
- Your insurance card
- Plan documents
- Summary of Benefits and Coverage
- Explanation of Benefits statements
- Medical bills
- Prescription receipts
- Appeal letters
- Records of payments
These records can help if you need to question a bill, verify deductible progress, or appeal a claim decision.
Common Health Insurance Mistakes to Avoid
Looking Only at the Premium
The premium is important, but it is only one part of your potential healthcare costs.
Ignoring the Provider Network
A plan’s network can affect both your choice of providers and the amount you pay.
Not Checking the Deductible
Know how much you may have to pay before the plan begins sharing certain costs.
Not Checking the Out-of-Pocket Maximum
The out-of-pocket maximum can be important when estimating your financial exposure to covered healthcare costs.
Assuming All Services Are Covered
Review your plan’s benefits, exclusions, limitations, and requirements.
Ignoring Prior Authorization Requirements
If your plan requires prior authorization for a particular service, failing to follow the process can affect coverage.
Frequently Asked Questions About How Health Insurance Works
How does health insurance work in simple terms?
You pay for health coverage through a premium, use covered healthcare according to the plan’s rules, and share eligible healthcare costs with the insurance company through deductibles, copayments, coinsurance, or other cost sharing.
Do I have to pay a premium if I do not use my health insurance?
Generally, yes. The premium pays for maintaining the coverage, whether or not you use healthcare services during that period.
Does insurance pay the full medical bill?
Not necessarily. Your plan may require you to pay deductibles, copayments, coinsurance, or other amounts for covered services.
What happens after I meet my deductible?
Depending on the plan, you may still have copayments or coinsurance. Your plan then continues to apply its cost-sharing rules until you reach the applicable out-of-pocket maximum.
What happens after I reach my out-of-pocket maximum?
For covered benefits, your plan generally pays 100% for the remainder of the plan year after you reach the applicable out-of-pocket maximum, subject to the plan’s terms.
Does my premium count toward my deductible?
Generally, premiums do not count toward the deductible. Premiums and cost-sharing expenses are separate parts of health insurance costs.
Can I use any doctor with health insurance?
Not necessarily. Your plan may have a provider network and different rules for in-network and out-of-network care.
What is an EOB?
An EOB, or Explanation of Benefits, is a document from your health insurer explaining how a healthcare claim was processed. It is generally not the same as a medical bill.
Why can a health insurance claim be denied?
Claims can be denied for several reasons, including lack of coverage, network issues, missing authorization, or other plan requirements. The denial notice should explain the reason and available appeal rights.
How can I reduce my health insurance costs?
Compare the complete cost structure of plans, including premiums, deductibles, copayments, coinsurance, out-of-pocket maximums, provider networks, and prescription coverage. If you qualify, financial assistance may also affect your premium.
How PolicyHelpUSA Can Help
Health insurance becomes much easier to understand when you break it down into individual parts. At PolicyHelpUSA, we are building a complete Health Insurance resource covering the terminology, plan types, costs, enrollment process, claims, and other topics consumers commonly encounter.
Start with our guide on what health insurance is, then continue with our upcoming guides covering HMO vs. PPO plans, deductibles, copayments, coinsurance, out-of-pocket maximums, and other health insurance topics. As you compare or use health insurance, always check your own plan documents and current official government information because coverage, costs, eligibility, and rules can vary.
