ICD-10-CM > P00-P96 > P19-P29 > P28 > P28.1 P28.1 Other and unspecified atelectasis of newborn Non-Billable/Non-Specific Codes P28.10Unspecified atelectasis of newbornP28.11Resorption atelectasis without respiratory distress syndromeP28.19Other atelectasis of newborn