According to the CMS fact sheet, hospitals will need to "identify which perinatal quality collaborative the hospital participates in." Inside a Perinatal Quality CollaborativeMost readers have never heard the term, which is part of why naming the collaborative is useful. The confirmed fact is narrow: Medicare will require hospitals to name their perinatal quality collaborative starting with FY 2028. Hospitals reporting the Maternal Morbidity Structural measure will have to identify which perinatal quality collaborative they participate in, rather than simply attesting that they participate in one. What is a perinatal quality collaborative?