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

CodeDisplayDefinition
surgerySurgeryGoal suspended or ended because of a surgical procedure.
life-eventLife EventGoal suspended or ended because of a significant life event (marital change, bereavement, etc.).
replacedReplacedGoal has been superseded by a new goal.
patient-requestPatient RequestPatient wishes the goal to be set aside, at least temporarily.
temp-not-attainableGoal Not Attainable TemporarilyGoal can not be reached temporarily.
permanent-not-attainableGoal Not Attainable PermanentlyGoal can not be reached permanently.
financial-barrierFinancial ReasonGoal can not be reached due to financial barrier or reason.
lack-of-transportationLack Of TransportationGoal can not be reached due to a lack of transportation.
lack-of-social-supportLack Of Social SupportGoal can not be reached due to a lack of social support.