See the patterns page for implementation and usage patterns.

The MedicationRequest and MedicationNotRequested profiles represent the positive and negative statements for a medication order. To ensure instances retrieved meet negative intent, applications should check the status and doNotPerform elements as illustrated in this example:

define MedicationNotRequested:
  [MedicationRequest] R
    where R.status = 'completed'
      and R.doNotPerform is true

The following example illustrates the use of the MedicationNotRequested profile:

define "Antithrombotic Not Given at Discharge":
  ["MedicationRequest": medication in "Antithrombotic Therapy"] NoAntithromboticDischarge
    where NoAntithromboticDischarge.doNotPerform is true
			and (NoAntithromboticDischarge.reasonCode in "Medical Reason"
				or NoAntithromboticDischarge.reasonCode in "Patient Refusal")
      and (NoAntithromboticDischarge.isCommunity() or NoAntimthromboticDischarge.isDischarge())
      and NoAntithromboticDischarge.status = 'completed'
      and NoAntithromboticDischarge.intent = 'order'

Examples