Ariz. Rev. Stat. § 36-2225
A. The department shall develop and administer a statewide emergency medical services and trauma system to implement the Arizona emergency medical services and trauma system plan. The department shall adopt rules to establish standards for the following:
4. A trauma center designation and dedesignation process for health care institutions that provide trauma care. The department may adopt rules that:
(a) Allow for designation based on:
B. For the purposes of this section: