Table of Contents


The Order data model allows healthcare organizations to request services with the practitioner's instructions for a patient's treatment. The order is generally triggered when the practitioner places an order or when the healthcare organization releases it (e.g., after ordering, a clinician takes action on a worklist of pending orders).

Orders commonly contain lab orders. If so, the EHR system sends a message with an expected date and time when a practitioner places an order (e.g., glucose test). When a nurse doing lab rounds (inpatient) or at a collection center (outpatient) collects the specimen, the EHR might send Order.Update with additional information about the collection (e.g., collection user, collection date/time).