In tracker http://gforge.hl7.org/gf/project/fhir/tracker/?action=TrackerItemEdit&tracker_item_id=3720, Pharmacy is noted as agreeing to add statuses to support "proposed" and "planned" medications. While the tracker item is identified as "published", it looks like the change wasn't made to the MedicationOrder resource. It's possible the modeling decision identified here will get superseded by recommendations from the FHIR Workflow project, but I wanted to highlight that the agreed change hasn't been applied yet.