1. Amount of space taken by a body as stated in cubic units. 2. Number of services, procedures, or tests performed. 3. Number of patients seen in a medical office or hospital facility. 4. Number of patients in a diagnosis-related group (DRG) during a certain period of time.

In the Medicare program, quantity of medical services per beneficiary, taking into account the number and complexity of the services provided.

Change factor in the volume of services that occurs in reaction to a change in fees. It is used in the annual setting of the Medicare volume performance standard (VPS), resulting in higher annual payments than would otherwise be expected.

Reduction in premium rate applied to new group insurance coverage based on total case premium for specific coverage or total premium and premium per employee certificate.

Increase in premium rate applied to new group insurance coverage based on total case premium for specific coverage or total premium and premium per employee certificate.

Method for updating and adjusting fees based on annual increase in actual expenditures compared with previously determined VPS rates of increase. It is the desired growth rate for spending on Medicare fvPart B physician services that is set each year by Congress.

Contracts between the Centers for Medicare and Medicaid Services (CMS) and various insurers and employers to exchange Medicare information and group health plan eligibility information for the purpose of coordinating health benefit payments.

Measures that providers have agreed to establish to assist in keeping medical costs down.

Self-insured disability insurance plan used in lieu of a state plan, in which a majority of employees voluntarily consent to be covered.