A revision in a benefit plan (such as an increase in co-payment) that results in a reduced premium.

The portion of medical expenses for which the HMO member is responsible.

The measure of total costs that are expended on healthcare as a percentage of total premium reserves.

A health care organization that almost completely pays for services obtained from its network of "preferred" providers, but only partially pays for services obtained from out-of-network providers.

A method of delivering and paying for healthcare through a system of provider networks. Managed care plans include HMO's , preferred provider organizations (PPO), and point-of-service (POS) plans.

A physician who provides healthcare to patients. Medical facilities can also be referred to as providers.

A health benefit program for low-income U.S. residents who are aged, blind, disabled, or who are members of families with dependent children. The states and federal government jointly fund Medicaid but each state sets eligibility standards.

A federally funded U.S. health insurance program for persons 65 and older, and all disabled persons regardless of age and income.

Nonemergency healthcare services given to patients who don’t require overnight hospitalization.

Hospital care focused on a patient whose physical or mental condition requires immediate intervention and constant medical attention, equipment , or personnel.