Barium enema

Suspension of barium sulfate injected into the lower bowel to render it radiopaque, usually followed by injection of air to inflate the bowel and increase definition for the purposes of identifying disorders or early signs of cancer.

Base capitation

Specific dollar amount per member per month (PMPM) in a managed care plan that covers medical costs. Usually this excludes administrative costs, mental health services, pharmacy, and substance abuse services.

Base charge

Specific dollar amount from the Medicare fee schedule that is allowed for a participating provider according to the specialty. Commonly referred to as participating provider’s fee .

Base payment amount

Dollars and cents amount that is established for one unit as applied to a service rendered or product furnished. This unit (sometimes called a conversion factor) is then used to convert various services/procedures into fee-schedule payment amounts by multiplying the relative value unit by the conversion factor (base payment amount). It establishes the level of the payment rates in the payment system.