The guidelines and legal requirements for the constitution of the CPA are defined on the basis of the state.  The federal government approved the CPAs in 1995.  Washington was the first state to pass laws allowing formal formation of CPAs. In 1979, Washington changed the practice of pharmaceutical requirements that provide for the formation of “collaborative drug therapy agreements.” [Citation required] Since February 2016, 48 states and Washington D.C have passed laws that allow the availability of CPAs.  The only two states that do not allow cpAs to be made available are Alabama and Delaware.  Alabama pharmacists hoped that a CPA law, House Bill 494, would be passed in 2015.  The bill was introduced by Alabama House Of Representatives Representative Ron Johnson, but died in committee.  A Collaborative Practice Agreement (CPA) is a legal document in the United States that establishes a legal relationship between clinical pharmacists and cooperating physicians, allowing pharmacists to participate in collaborative therapy management (CDTM). In 2010, the American Medical Association (AMA) published a series of reports entitled “AMA Scope of Practice Data Series.”  One report focused on the pharmacy profession, which criticized the formation of CPAs as an attempt by pharmacists to intervene with the physician.
In response to the report, a collaboration of seven national pharmacists` associations prepared a response to the WADA Pharmacists Report.  The response called on WADA to correct its report and publish the revised report with Errata.  In 2011, the WADA Chamber of Deputies adopted a more flexible tone of the APhA in response to contributions from aPhA and other pharmacy professional associations and finally adopted the following resolution, which paid attention to the rejection of independent conduct agreements (rather than collaborative or dependent agreements): as part of the cooperation agreement, one CPP adopted pre-scripts for controlled and uncontrolled substances.  Pharmacists can help physicians treat chronic diseases of outpatients in different ways: The CPA indicates the criteria for prescribing the drug. In the keynote address at the 2013 APH annual meeting, Reid Blackwelder, president of the American Academy of Family Physics (AAFP), called for a “collaborative vision of health.”  In 2015, the American College of Clinical Pharmacy (ACCP) published an updated white paper on the management of collaborative drug therapy. CacP regularly publishes updates on this topic, with previous publications in 2003 and 1997. The document describes the recent history of CPAs, legislative advances and discussed payment models for collaborative drug therapy management activities.  Arkansan CPAs apply to individual pharmacists, practitioners admitted as “authorized practitioners to prescribe drugs” and patients.