Psychiatrists, nurse practitioners, clinicians, counselors, peers, and other staff who work in mental health settings are in an optimal position to treat co-occurring opioid use and mental health disorders. People with mood and anxiety disorders are twice as likely to use opioid medications as people without mental health problems and are more than three times as likely to use them nonmedically. Clients with co-occurring disorders are far more likely to receive mental health care than substance use treatment. Substantial evidence documents the impact of untreated opioid use disorder (OUD) on clients’ mental health, functioning, and quality of life. This webinar will review the principles of identifying and treating OUD for clients served by within mental health settings specifically including the use of medications for opioid use disorder. The presenter will also review the treatment planning, documentation, privacy regulation, and billing implications.