| P28 | Other respiratory conditions originating in the perinatal period | NON-BILLABLE CODE |
| P28.0 | Primary atelectasis of newborn | BILLABLE CODE |
| P28.1 | Other and unspecified atelectasis of newborn | NON-BILLABLE CODE |
| P28.10 | Unspecified atelectasis of newborn | BILLABLE CODE |
| P28.11 | Resorption atelectasis without respiratory distress syndrome | BILLABLE CODE |
| P28.19 | Other atelectasis of newborn | BILLABLE CODE |
| P28.3 | Primary sleep apnea of newborn | NON-BILLABLE CODE |
| P28.30 | Primary sleep apnea of newborn, unspecified | BILLABLE CODE |
| P28.31 | Primary central sleep apnea of newborn | BILLABLE CODE |
| P28.32 | Primary obstructive sleep apnea of newborn | BILLABLE CODE |
| P28.33 | Primary mixed sleep apnea of newborn | BILLABLE CODE |
| P28.39 | Other primary sleep apnea of newborn | BILLABLE CODE |
| P28.4 | Other apnea of newborn | NON-BILLABLE CODE |
| P28.40 | Unspecified apnea of newborn | BILLABLE CODE |
| P28.41 | Central neonatal apnea of newborn | BILLABLE CODE |
| P28.42 | Obstructive apnea of newborn | BILLABLE CODE |
| P28.43 | Mixed neonatal apnea of newborn | BILLABLE CODE |
| P28.49 | Other apnea of newborn | BILLABLE CODE |
| P28.5 | Respiratory failure of newborn | BILLABLE CODE |
| P28.8 | Other specified respiratory conditions of newborn | NON-BILLABLE CODE |
| P28.81 | Respiratory arrest of newborn | BILLABLE CODE |
| P28.89 | Other specified respiratory conditions of newborn | BILLABLE CODE |
| P28.9 | Respiratory condition of newborn, unspecified | BILLABLE CODE |
