1. Employer or employee organization (union) or both that establishes and maintains an employee benefit plan (e.g., includes government health plans and church health plans). 2. In a 401(k) defined-contribution pension plan, an employer. 3. Under the Health Insurance Portability and Accountability Act (HIPAA), either an employer in case of an employee benefit plan, employee organization in case of a plan maintained by an employee organization, or if two or more employers, the association or committee that maintains the plan.

Group that organizes the group health plan, oversees its facilities, and provides managerial authority.

Benefit year that the managed care or health insurance plan is in effect.

Health care financing approach requiring employers to provide private insurance coverage for their workers or pay a tax that would go into a public regional fund to cover the uninsured.

Acronym that translates as professional liability insurance. See malpractice insurance.

In the CPT code book, symbol that precedes a code number indicating the code may be reported in addition to the parent or primary procedure code number. Add-on codes are never reported for stand-alone services but are reported secondarily in addition to the primary procedure. Also see add-on code.

Abbreviation for per member per month. See member months.