| ICD-10 Code | Description |
| P07.30 | Preterm newborn, unspecified weeks of gestation |
| P07.31 | Preterm newborn, gestational age 28 completed weeks |
| P07.32 | Preterm newborn, gestational age 29 completed weeks |
| P07.33 | Preterm newborn, gestational age 30 completed weeks |
| P07.34 | Preterm newborn, gestational age 31 completed weeks |
| P07.35 | Preterm newborn, gestational age 32 completed weeks |
| P07.36 | Preterm newborn, gestational age 33 completed weeks |
| P07.37 | Preterm newborn, gestational age 34 completed weeks |
| P07.38 | Preterm newborn, gestational age 35 completed weeks |
| P07.39 | Preterm newborn, gestational age 36 completed weeks |
