The Affordable Care Act is the comprehensive health care reform law enacted in March 2010 (sometimes known as ACA, The Patient Protection and Affordable Care Act - PPACA, or “Obamacare”). The ACA extended health care coverage to more Americans, enacted provisions to eliminate the denial of pre-existing conditions (including mental health conditions), expanded Medicaid, and included mental health and behavioral health conditions as essential health benefits that must be covered by health insurance.