This value set includes codes based on the following rules:

• Include these codes as defined in http://snomed.info/sct version http://snomed.info/sct/731000124108/version/20200901

  Code	Display
  284453007	Church (environment)
  224864007	College (environment)
  1348009	Day care center (environment)
  264362003	Home (environment)
  257656006	Correctional Facility (NETSS)
  257698009	School (environment)
  83891005	Doctors Office
  225746001	Hospital Ward
  285141008	Work environment (environment)

• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-RoleCode version 20140716

  Code	Display
  ER	Emergency room

• Include these codes as defined in http://terminology.hl7.org/CodeSystem/umls version 20200813

  Code	Display
  C0029916	Hospital Outpatient Clinic

• Include these codes as defined in urn:oid:2.16.840.1.114222.4.5.274 version 20200526

  Code	Display
  PHC179	International Travel
  PHC64	Military (Environment)

• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-NullFlavor version 20090501

  Code	Display
  OTH	other
  UNK	unknown