Ariz. Rev. Stat. § 20-1126
A. When calculating an enrollee's contribution to any out-of-pocket maximum, deductible, copayment, coinsurance or other applicable cost sharing requirement, the health care insurer that provides pharmacy benefits or a pharmacy benefits manager that administers pharmacy benefits for a health care insurer shall include any cost sharing amount paid by either the enrollee or another person on behalf of the enrollee for a prescription drug that is either:
2. With a generic equivalent where the enrollee has obtained access to the prescription drug through any of the following:
B. For the purposes of this section:
1. "Generic equivalent":