Indiana Code Title 16. Health § 16-36-1-17

Sec. 17. If an individual is incapable of consenting to the individual's own health care, the health care provider shall make a reasonable inquiry as to the availability of individuals who are able to provide health care consent under section 5 of this chapter.  Reasonable inquiry includes examining the medical records and personal effects of the individual who is incapable of providing health care consent.  The health care provider shall attempt to contact individuals who are high in the priority level and able to provide health care consent under section 5 of this chapter by telephone or other means after a determination is made that the individual is incapable of providing health care consent.