This code system http://hl7.org/fhir/encounter-location-status defines the following codes:

CodeDisplayDefinition
plannedPlannedThe patient is planned to be moved to this location at some point in the future.
activeActiveThe patient is currently at this location, or was between the period specified. A system may update these records when the patient leaves the location to either reserved, or completed
reservedReservedThis location is held empty for this patient.
completedCompletedThe patient was at this location during the period specified. Not to be used when the patient is currently at the location