US lawCaliforniaStatutesCode probDivision 4.7Part 44784Cal. PROB § 4784Cal. PROB § 4784Last amended: 2008Year: 2025Length: 24 wordsOfficial source In the absence of knowledge to the contrary, a health care provider may presume that a request regarding resuscitative measures is valid and unrevoked.PreviousCal. PROB § 4783NextCal. PROB § 4785