California Code, Welfare and Institutions Code - WIC § 9270

(a) A public patient representative shall not participate in an interdisciplinary team review of a decision that would directly and inexorably lead to death.

(b) Notwithstanding subdivision (a), a public patient representative may participate in an interdisciplinary team review to create or revise Physician Orders for Life Sustaining Treatment, as specified in Part 4 (commencing with Section 4780) of Division 4.7 of the Probate Code, Do Not Resuscitate, comfort care orders, and elections of hospice care.  The public patient representative shall ascertain whether that care is consistent with the resident's individual health care instructions, if any, and other expressed wishes, to the extent known, or otherwise whether the proposed intervention appears consistent with the best interest of the resident.