Cal. PEN § 12022.95

Any person convicted of a violation of Section 273a, who under circumstances or conditions likely to produce great bodily harm or death, willfully causes or permits any child to suffer, or inflicts thereon unjustifiable physical pain or injury that results in death, or having the care or custody of any child, under circumstances likely to produce great bodily harm or death, willfully causes or permits that child to be injured or harmed, and that injury or harm results in death, shall receive a four-year enhancement for each violation, in addition to the sentence provided for that conviction. Nothing in this paragraph shall be construed as affecting the applicability of subdivision (a) of Section 187 or Section 192. This section shall not apply unless the allegation is included within an accusatory pleading and admitted by the defendant or found to be true by the trier of fact.