HB 1504 proposes to authorize and regulate the possession, use, cultivation, distribution, and delivery of medical cannabis for qualifying patients with certain debilitating medical conditions. It includes provisions for the licensing of dispensing organizations and cannabis testing facilities and establishes protections from legal actions for individuals and entities involved in compliant medical cannabis activities. The bill also sets rules for the Compassionate-Use Registry, expands definitions of medical practitioners and conditions eligible for medical cannabis use, and outlines security and licensing protocols.