See the patterns page for implementation and usage patterns.

The MedicationRequest and MedicationNotRequested profiles represent the positive and negative statements for a medication order.

Examples

Both of these example instances meet measure intent for exclusion as defined in the following example CQL:

define "Reason for Not Ordering Antithrombotic":
  ["MedicationNotRequested": "Antithrombotic Therapy"] NoAntithromboticDischarge
    where (NoAntithromboticDischarge.reasonCode in "Medical Reason"
      or NoAntithromboticDischarge.reasonCode in "Patient Refusal")
      and (NoAntithromboticDischarge.isCommunity() or NoAntithromboticDischarge.isDischarge())
      and NoAntithromboticDischarge.status in { 'active', 'completed' }
      and NoAntithromboticDischarge.intent = 'order'

For a more complete discussion of representation of negation within QI-Core and quality improvement artifacts, see the Negation in QI-Core topic.