This case-sensitive code system http://hl7.org/fhir/device-status defines the following codes:
Code
Display
Definition
active
Active
The device is available for use. Note: For *implanted devices* this means that the device is implanted in the patient.
inactive
Inactive
The device is no longer available for use (e.g. lost, expired, damaged). Note: For *implanted devices* this means that the device has been removed from the patient.