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Glossary

Healthcare and health insurance definitions.

A B C D E F G H I L M N O P Q R S T U V W

M

Medicare :

The federal health insurance program for older U.S. citizens and the disabled.

Medically necessary :

Healthcare services or supplies needed to prevent, diagnose or treat an illness, injury, condition, disease or its symptoms and that meet accepted standards of medicine. See ACA Uniform Glossary.

Member :

Often used in place of “the enrolled” or “the insured” person, the member is anyone covered by the health plan, whether they are the subscriber or a dependent on their policy.

Mental health and chemical dependency parity :

Oregon’s mental health parity law, which became effective January 1, 2007. It requires group health insurance policies to cover treatment of chemical dependency and mental or nervous conditions at the same level and with no more restrictions than those imposed for other medical conditions.

MRI :

Magnetic resonance imaging—a radiology technology to form pictures of the anatomy and the physiological processes of the body.