This case-sensitive code system http://hl7.org/fhir/care-plan-activity-status defines the following codes in an undefined hierarchy:
Lvl
Code
Display
Definition
1
not-started
Not Started
Care plan activity is planned but no action has yet been taken.
1
scheduled
Scheduled
Appointment or other booking has occurred but activity has not yet begun.
1
in-progress
In Progress
Care plan activity has been started but is not yet complete.
1
on-hold
On Hold
Care plan activity was started but has temporarily ceased with an expectation of resumption at a future time.
1
completed
Completed
Care plan activity has been completed (more or less) as planned.
1
cancelled
Cancelled
The planned care plan activity has been withdrawn.
2
stopped
Stopped
The planned care plan activity has been ended prior to completion after the activity was started.
1
unknown
Unknown
The current state of the care plan activity is not known. Note: This concept is not to be used for "other" - one of the listed statuses is presumed to apply, but the authoring/source system does not know which one.
1
entered-in-error
Entered in Error
Care plan activity was entered in error and voided.