A pre-defined and approved group of orders related to a particular clinical condition (e.g. hypertension treatment and monitoring) or stage of care (e.g. hospital admission to Coronary Care Unit). An order set is used as a checklist for the clinician when managing a patient with a specific condition. It is a structured collection of orders relevant to that condition and presented to the clinician in a computerized provider order entry (CPOE) system.

Defines a desired/typical sequence of clinical activities including preconditions, triggers and temporal relationships.

A decision support rule of the form [on Event] if Condition then Action. It is intended to be a shareable, computable definition of actions that should be taken whenever some condition is met in response to a particular event or events.

Defines the steps for a group of one or more systems in an event flow process along with the step constraints, sequence, pre-conditions and decision points to complete a particular objective.