Health Care Advance Directive
Health Care Directives are instructions specifying what actions should be taken for your health care in the event you are no longer able to make decisions due to illness or injury and appoints a person to make decisions on your behalf. This can also be a discussion with your family and physician about the kinds of care you want.
For additional information:
Advance Directive - WebMD
Advance Health Care Directive - California Dept. of Justice