Ariz. Rev. Stat. § 12-563 : Courts and Civil Proceedings — ACTIONS RELATING TO HEALTH CARE — General Provisions —563 - Necessary elements of proof TEXT PDF Both of the following shall be necessary elements of proof that injury resulted from the failure of a health care provider to follow the accepted standard of care: 1. The health care provider failed to exercise that degree of care, skill and learning expected of a reasonable, prudent health care provider in the profession or class to which he belongs within the state acting in the same or similar circumstances. 2. Such failure was a proximate cause of the injury. A.R.S. § 12-563