California Code, Health and Safety Code - HSC § 102850

(a) Without medical attendance.

(b) During the continued absence of the attending physician and surgeon.

(c) Where the attending physician and surgeon or the physician assistant is unable to state the cause of death.

(d) Where suicide is suspected.

(e) Following an injury or an accident.

(f) Under circumstances as to afford a reasonable ground to suspect that the death was caused by the criminal act of another.

Any person who does not notify the coroner as required by this section is guilty of a misdemeanor.