P28.1 Other and unspecified atelectasis of newbornNon-billable header with 3 child codes.
P28.10 Unspecified atelectasis of newbornP28.11 Resorption atelectasis without respiratory distress syndromeP28.19 Other atelectasis of newbornP28 Other respiratory conditions originating in the perinatal periodP28.0 Primary atelectasis of newbornP28.1 Other and unspecified atelectasis of newborn (this code)P28.10 Unspecified atelectasis of newbornP28.11 Resorption atelectasis without respiratory distress syndromeP28.19 Other atelectasis of newbornP28.2 Cyanotic attacks of newbornP28.3 Primary sleep apnea of newborn