What Is the Purpose of Health Insurance?

Health insurance exists to help people get—and pay for—the care they need. It helps pay for covered medical services, from routine checkups and preventive screenings to emergency care, prescriptions, hospital stays, and ongoing treatment for serious or chronic conditions.

Health insurance also helps protect people from the financial risk of high or unexpected healthcare costs. By bringing many people together in a shared system of premiums, covered benefits, care provider networks, and negotiated rates, health insurance spreads risk across a larger group so the cost of care does not fall entirely on one person or family.

In that way, health insurance supports both health and financial stability. It works to make care more predictable, helps people stay connected to doctors and hospitals, and creates a structure that can support earlier treatment, better prevention, and stronger health over time.
 

How Health Insurance Works

Health insurance works by combining covered benefits, regular payments (insurance premiums), care provider networks, negotiated rates, and cost-sharing rules into a structured system for paying for care. When someone receives a covered healthcare service, the plan pays a defined portion of the cost based on the plan’s design. The individual may also pay part of the cost through a deductible, copayment, or coinsurance.

This collective model, known as “risk pooling,” is the foundational mechanism helping health plans deliver predictable, sustainable coverage. Risk pooling involves many people making a routine, regular payment. That “pooled” money helps pay for needed care, whether it’s a routine check-up, an emergency, or ongoing treatment for a chronic condition. Most people won’t require expensive care in any given month, but some will. Risk pooling assists with balancing that uncertainty, so the cost of illness doesn’t fall solely on those who need immediate help.

“Health insurance helps people find and access high-quality physicians and specialists, making it easier to get the right care at the right time,” said Morgan Kendrick, president of the Commercial Health Benefits division of Elevance Health. “It also helps make healthcare costs more manageable and predictable, by encouraging people to seek care early before small concerns become bigger issues.
 

Why Health Insurance Matters

Health insurance supports both health and financial stability, including helping protect people from the financial costs of a serious health event and supporting the peace of mind that comes from getting regular checkups.  

• Financial protection from serious health events: A broken leg. A complicated birth. A cancer diagnosis. Even with the best financial planning for unforeseen circumstances, some medical bills can be challenging. Health insurance helps reduce the risk that a single event will create long-term financial setbacks.
• More predictable costs for care: With insurance, people benefit from rates negotiated by their insurance company and a limit on how much they need to pay in a year, so one surgery, emergency department visit, or series of treatments is less likely to result in an unexpected bill.
• Health insurance helps keep people healthy: Most insurance plan benefits cover routine checkups, age- or condition-specific screenings, and vaccines at no cost (or at a low cost) to the individual. When people take advantage of these preventive steps, illnesses or conditions can be found earlier, before they become more serious. These same checkups and screenings can cost hundreds of dollars without insurance, and this may discourage people from getting them.
• Peace of mind: Knowing they have insurance coverage allows people to focus on getting and staying well, rather than worrying about how they’ll pay for care.
  
  

A Health Safety Net

From employer-sponsored insurance to government-sponsored plans, the various types of insurance benefits in a community help to create a broader health safety net anchored by:

• More people getting preventive care because it is included in their plans.
• Fewer delayed diagnoses and costly emergencies because people get preventive care
• Less financial pressure on care providers and hospitals because more people can pay for their care via insurance.

“Health insurance does more than protect one person at a time,” said Dr. Shantanu Agrawal, chief health officer for Elevance Health. “When more people have health coverage, the whole community benefits. Healthcare delivery groups can plan and invest for the long term, people can get care when they need it, and the community attracts high-quality care providers. This helps improve health for individuals, families, and communities.”

Frequently Asked Questions

What is the purpose of health insurance?

The purpose of health insurance is to make healthcare more affordable by sharing risk across many people—so individuals aren’t left alone to cover high, unexpected costs.

What is risk pooling?

In health insurance, risk pooling is the idea that many people contribute to a shared pool of funds (through premiums), which helps pay for care when any member of the group needs it.

Why is it important to have health insurance?

It is important to have health insurance because it provides physical and financial access to healthcare, limits large medical bills, and makes it easier to seek preventive services, helping physical and financial well-being.

Why do people need health insurance?

People need health insurance because no one can predict medical needs or costs. Health insurance helps make it easier to find high quality care, reduces the financial shock of illness or injury, and makes it easier to access healthcare when it’s needed.

Why does health insurance exist?

Health insurance exists because it protects people from high costs in the event something goes wrong. In the same way that auto and home or renter’s insurance reduces financial risk, health insurance also helps make care more manageable and available for individuals and communities.