What is health insurance?
Health insurance helps pay eligible medical and prescription costs according to a plan's network, deductible, copayment, coinsurance, authorization, and coverage rules. Options may come from an employer, the individual marketplace, a government program, or another eligible group.
A low premium does not necessarily mean the lowest total cost. Expected care, prescriptions, preferred clinicians, financial assistance, and the maximum out-of-pocket limit all matter when comparing plans.
Terms that shape how a plan works
Important plan features include:
Provider network
Plans may use HMO, PPO, EPO, or other network arrangements. Out-of-network care can be unavailable or significantly more expensive except where law or the plan provides otherwise.
Deductible
The amount a member pays for specified covered services before the plan begins sharing those costs; some services may be treated differently.
Copayments and coinsurance
The member's share of eligible costs after applying the plan's rules and negotiated amounts.
Out-of-pocket maximum
A cap on specified in-network cost sharing during the plan year; premiums and noncovered services generally do not count.
Drug formulary
Covered medications are grouped into tiers and may be subject to prior authorization, quantity limits, or step therapy.
Common limitations and gaps
- A service can be medically appropriate but still require authorization or fail to meet plan coverage criteria
- Noncovered care and many out-of-network charges may not count toward the out-of-pocket maximum
- Networks and formularies can change
- Short-term or limited-benefit products do not provide the same protections as comprehensive major medical coverage
- Enrollment usually must occur during an open enrollment or qualifying special enrollment period
What affects your coverage needs
- Doctors, hospitals, and pharmacies used
- Regular prescriptions and anticipated care
- Premium, deductible, and maximum out-of-pocket exposure
- Eligibility for employer contributions or marketplace assistance
- Travel and out-of-area care needs
What to compare between policies
- Summary of Benefits and Coverage
- Provider directory confirmed with both plan and provider
- Drug formulary and pharmacy network
- Referral and prior-authorization rules
- Family versus individual deductibles and limits
A practical next step
Gather your current declarations, a list of the people and property that need to be insured, and any questions about limits or exclusions. Those details make it easier to compare policies on coverage as well as price.
Coverage availability, terms, limits, and eligibility vary by insurer and state. Coverage can be confirmed only by the issued policy and applicable endorsements.