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

CodeDisplayDefinition
activeActiveThe medication is still being taken.
completedCompletedThe medication is no longer being taken.
entered-in-errorEntered in ErrorThe statement was recorded incorrectly.
intendedIntendedThe medication may be taken at some time in the future.
stoppedStoppedActions implied by the statement have been permanently halted, before all of them occurred.
on-holdOn HoldActions implied by the statement have been temporarily halted, but are expected to continue later. May also be called "suspended".