The Affordable Care Act (ACA)[1] is divided into 10 titles[2] and contains provisions that became effective immediately, 90 days after enactment, and six months after enactment, as well as provisions phased in through to 2020.[3][4] Below are some of the key provisions of the ACA. For simplicity, the amendments in the Health Care and Education Reconciliation Act of 2010 are integrated into this timeline.[5][6]

Provisions by effective date

Effective at enactment, March 23, 2010