The term "health insurance" is commonly used in the United States to describe any program that helps pay for medical expenses, whether through privately purchased insurance, social insurance or a non-insurance social welfare program funded by the government. Synonyms for this usage include "health coverage," "health care coverage" and "health benefits" and "medical insurance." In a more technical sense, the term is used to describe any form of insurance that provides protection against injury or illness.
In America, the health insurance industry has changed rapidly during the last few decades. In the 1970's most people who had health insurance had indemnity insurance. Indemnity insurance is often called fee-forservice. It is the traditional health insurance in which the medical provider (usually a doctor or hospital) is paid a fee for each service provided to the patient covered under the policy.