Final answer:
Underinsured individuals have health insurance, but it may not cover all of their medical expenses.
Step-by-step explanation:
Underinsured individuals have health insurance, but the coverage does not adequately protect against high medical expenses or pay for all services. They may have a deductible, which is a fixed amount the insurance does not cover before paying benefits. They may also have to pay a percentage of costs through co-insurance, or a fixed amount for each visit through co-payment.
For example, someone with health insurance might have to pay the first $1,000 of their health expenses as a deductible and then pay 20% of the costs through co-insurance. This means that they have insurance, but it may not cover all of their medical expenses, resulting in financial burden.