Hospitals with level 1 or 2 nurseries had more missed and late diagnoses of critical congenital heart disease in infants, compared with those that had higher level units, according to a CDC study presented at the American Public Health Association's annual meeting. HHS in 2011 called for adding CCHD to the Recommended Uniform Screening Panel, and so far 10 states have passed laws to do so, while nine others have introduced legislation.