The 3 main categories are below. Alberta Health Services HAS UPDATED the Goals of Care Designation (GCD).
At some point caregivers should consider what level of medical support they want for their loved one. Preferably caregivers and the disgnosed person are able to have this conversation early in the diagnosis. If not, the caregiver needs to consider options. If you want any care different than "whatever it takes to keep my loved one alive," then you should have a plastic sleeve (green is best as Emergency Responders will look for it) taped to the fridge door which contains the informtion you want. However, your Home Care nurse or doctor should have the detailed "Goals of Care Designations - Guide for Clinicians," which has a lot more detail.
The AHS website has good information about the Level of support/goals of care. It is well worth reading.
Medical Care (M) – Medical tests and interventions are used to cure or manage an illness as well as possible, but don’t use resuscitative or life support measures. This is appropriate when resuscitative and life support measures won’t work or when the person chooses not to have these treatments. Medical care can be given in many locations, depending on the person’s wishes and values, as well as if it is medically appropriate.
Resuscitative Care (R) – The focus is to extend or preserve life using any medical or surgical means. This includes, if needed, resuscitation and admission to the intensive care unit. Talk to your healthcare team about which Goal of Care designation best reflects your health circumstances and your wishes and values.
Comfort Care (C) – The focus of care is to provide comfort to ease a person’s symptoms without trying to control the underlying illness. This is for people who have a life-limiting illness, when treatments can’t influence the course of that illness. This care can be given in any setting.