California Code, Welfare and Institutions Code - WIC § 18259.3

(a) For purposes of this chapter, “commercially sexually exploited minor” means a person under 18 years of age who is described by one or more of the following:

(b) If a minor is arrested or detained for an alleged violation of subdivision (a) or (b) of Section 647 of the Penal Code or of subdivision (a) of former Section 653.22 of the Penal Code, or if a minor is the subject of a petition to be adjudged a dependent of the juvenile court pursuant to paragraph (2) of subdivision (b) of Section 300, they shall be presumed to be a commercially sexually exploited minor, as defined in subdivision (a).