A new report offers clinical tools to better measure success in reducing deaths from opioid use disorders as health care systems expand substance use disorder treatments into primary care settings. The report provides a baseline estimate of the excess mortality suffered by patients with opioid use disorder who are treated in a general health care system, and identifies the main proximate causes of death. 
Recent health care reforms promote the expansion of substance use disorder treatment into primary care settings. The goals are to reduce morbidity and mortality by facilitating earlier recognition of patients’ substance use problems, coordinated treatment of substance use disorders and comorbid conditions, and improved models for treating the chronic relapsing nature of substance use disorders.

Full text – NIDA website