The affordable care Act (ACA) became law in March 2010.1 Although its full impact on Americans and the American health care system will unfold over many years, it represents fundamental change for patients and health care. Many may wonder how the law affects children and the health professionals who serve them. Some of the most publicized aspects of ACA (eg, guaranteed access to parents’ coverage for children aged less than 26 years, prohibitions against coverage denials for children aged less than 19 years with preexisting conditions) will directly help children, youth, and young adults.