What Is Health Insurance?
Health insurance is a contract that pays for some or all of your medical care. You pay a monthly premium; in exchange, the plan covers doctor visits, hospital stays, prescriptions, and preventive care subject to deductibles, copays, and coinsurance.
All ACA-compliant plans must cover 10 essential health benefits (preventive care, emergency services, maternity, mental health, prescriptions, etc.) and cannot deny coverage or charge more based on pre-existing conditions — which is what separates a "real" plan from a limited short-term or indemnity product.