Allowable Costs: Charges which qualify as covered expenses.
Alzheimer's Disease: A progressive, irreversible disease characterized by degeneration of the brain cells and severe loss of memory causing the individual to become dysfunctional and dependent upon others for basic living needs.
Ambulatory Care: Similar to outpatient treatment in that it is care which does not require hospitalization.
Ancillary: Additional services (other than room and board charges) such as X-rays, anesthesia, lab work, etc. Fees charged for ancillary care such as X-rays, anesthesia, and lab work. This term may also be used to describe the charge made by a pharmacy for prescriptions which exceed the health insurance plan's maximum allowable cost (MAC).