Cal. Civ. Proc. Code § 129
(a) Notwithstanding any other law, a copy, reproduction, or facsimile of any kind of a photograph, negative, or print, including instant photographs and video recordings, of the body, or any portion of the body, of a deceased person, taken by or for the coroner at the scene of death or in the course of a post mortem examination or autopsy, shall not be made or disseminated except as follows:
(3) For use or potential use in a civil action or proceeding in this state that relates to the death of that person, if either of the following applies:
(A) The coroner receives written authorization from a legal heir, representative, or family member of that person. The written authorization may be provided before the action is filed or while the action is pending. To verify the identity of the legal heir, representative, or family member, all of the following shall be provided to the coroner: