On May 18, 2016, the Department of Health and Human Services (HHS) Office of Civil Rights (OCR) published a final rule implementing Section 1557 of the Affordable Care Act (ACA). Section 1557 prohibits discrimination in health care programs or activities on the basis of race, color, national origin, sex, age, or disability. Notably, this rule expands on prior civil rights law to prohibit sex discrimination in health care.