This case-sensitive code system http://fhir.org/guides/argonaut-scheduling/CodeSystem/status-reason defines the following codes:

Code	Display	Definition
abnormal-results	Laboratory Test Results Out of Acceptable Range	An appointment for an patient was cancelled by the provider because the patient's laboratory test results were outside of acceptable limits.
cms-auth	CMS Therapy Cap Service Not Authorized	An appointment for a patient was cancelled by the provider because the service not authorized by CMS.
deceased	Patient Deceased	An appointment for a patient was cancelled by the provider because the patient died.
discharged	Patient Discharged	An appointment for an inpatient was cancelled by the provider because the patient was discharged from the facility.
disgruntled	Patient Unhappy	An appointment for a patient was cancelled by the patient because the patient was unhappy with service or care.
equip-unavail	Equipment Not Available	An appointment for a patient was cancelled by the provider because needed equipment was not available (e.g., in use, out for repairs).
financial	Other Financial	An appointment for a patient was cancelled by the provider because of some unspecified financial reason ( e.g., no authorization.
hospitalized	Patient Hospitalized	An appointment for an outpatient was cancelled by the provider because the patient was hospitalized.
improper-iv	Improper IV Access/Infiltrate IV	An appointment for a patient was cancelled by the provider because the intravenous access was not satisfactory for the procedure.
improved	Patient Feeling Better	An appointment for a patient was cancelled by the patient because the patients signs and or symptoms improved and the patient no longer wanted care.
interpreter-unavail	Interpreter Not Available	An appointment for a patient was cancelled by the provider because a needed interpreter was not available.
meeting	Provider: Education or Meeting	??
moved	Patient Moved	An appointment for a patient was cancelled by the patient because the patient moved out of the area.
needs-tests	Patient Needs Tests	An appointment for a patient was cancelled by the patient because the patient did not have the prequisite diagnostic tests performed.
new-provider	Patient Changed Provider	An appointment for a patient was cancelled by the patient because the patient changed provider.
no-show	Patient No Show	An appointment for a patient was cancelled by the patient because the patient did not arrive for the appointment
other	Other	An appointment for a patient was cancelled by the provider because of some other reason not listed in this code list.
patient-cancel	Patient Cancel	An appointment for a patient was cancelled by the patient
personal	Provider Personal Reason?	??
plan-changes	Treatment Plan Changes	An appointment for an patient was cancelled by the provider because the patient's treatment plan changed
pregnant	Patient Pregnant	An appointment for a patient was cancelled by the patient because the patient was pregnant.
prep-incomplete	Prep? Medications Incomplete	An appointment for a patient was cancelled by the provider because a eeded preparatory insructions and/or medications not completed.
prep-unavail	Prep? or Medication or Test Results Unavailable	An appointment for a patient was cancelled by the provider because a needed diagnostic test or medications were not available.
refused	Patient Refused Procedure	An appointment for a patient was cancelled by the patient because the patient decided they did not want the service or procedure.
room-unavial	Room or Location Not Available.	An appointment for a patient was cancelled by the provider because the room or location was not available (e.g., in use, undergoing maintenance).
scheduling-error	Scheduling Error	An appointment for a patient was cancelled because it was made in error by the provider
staff-cancel	Staff Cancel	An appointment for a patient was cancelled by the provider
terminated	Patient Member Terminated	An appointment for a patient was cancelled by the patient because the patient's insurance membership was terminated.
transportation	Patient Lacked Transportation	An appointment for a patient was cancelled by the patient because the patients was not able to transport herself to the visit location.
wait-list	Patient Scheduled from Wait List	??
walk-in-error	Silent Walk In Error	??
weather	Weather	An appointment for a patient was cancelled by the provider or patient because of inclement weather.