ICD-10-CMICD-10-CMP07.21 — Extreme immaturity of newborn, gestational age less than 23 completed weeks
ICD-10-CMICD-10-CMO75.82 — Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section
ICD-10-CMICD-10-CMO42.00 — Premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation
ICD-10-CMICD-10-CMO42.10 — Premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified weeks of gestation