California Code, Health and Safety Code - HSC § 1363.01

(a) Every plan that covers prescription drug benefits shall provide notice in the evidence of coverage and disclosure form to enrollees regarding whether the plan uses a formulary. The notice shall be in language that is easily understood and in a format that is easy to understand. The notice shall include an explanation of what a formulary is, how the plan determines which prescription drugs are included or excluded, and how often the plan reviews the contents of the formulary.

(b) Every plan that covers prescription drug benefits shall provide to members of the public, upon request, information regarding whether a specific drug or drugs are on the plan's formulary. Notice of the opportunity to secure this information from the plan, including the plan's telephone number for making a request of this nature and the Internet Web site where the formulary is posted under Section 1367.205, shall be included in the evidence of coverage and disclosure form to enrollees.

(c) Every plan shall notify enrollees, and members of the public who request formulary information, that the presence of a drug on the plan's formulary does not guarantee that an enrollee will be prescribed that drug by his or her prescribing provider for a particular medical condition.