This case-sensitive code system http://hl7.org/fhir/us/pacio-adi/CodeSystem/ADIHCADecisionsCS defines the following codes:

Code	Display	Definition
intubation	Intubation	Request or reject intubation on behalf of the patient
tube-feeding	Tube feeding	Request or reject tube feeding on behalf of the patient
life-support	Life support	Request or reject life support on behalf of the patient
iv-fluid-and-support	IV fluid and support	Request or reject IV fluid and support on behalf of the patient
antibiotics	Antibiotics	Request or reject intubation on behalf of the patient
cpr	Cardiopulmonary Resuscitation (CPR)	Request or reject cardiopulmonary Resuscitation (CPR) on behalf of the patient
resuscitation-non-cpr	Non-CPR Resuscitation	Request or reject resuscitation that differs from cardiopulmonary resuscitation on behalf of the patient