All
 N02 Health Care Facilities, Manpower, and Services D005159 +
 N02.421 Health Services D006296 +
 N02.421.297 Emergency Medical Services D004632 +
 N02.421.297.058 Emergency Medical Service Communication Systems D004631 
 N02.421.297.195 Emergency Service, Hospital D004636 +
 N02.421.297.200 Emergency Services, Psychiatric D004637 
 N02.421.297.695 Poison Control Centers D011039 
 N02.421.297.879 Transportation of Patients D014187 
 N02.421.297.900 Triage D014218