ICD-10-CM > O00-O9A > O60-O77 > O60 > O60.1 > O60.10 O60.10 Preterm labor with preterm delivery, unspecified trimester Non-Billable/Non-Specific Applicable To Preterm labor with delivery NOS Codes O60.10X0..., not applicable or unspecifiedO60.10X1..., fetus 1O60.10X2..., fetus 2O60.10X3..., fetus 3O60.10X4..., fetus 4O60.10X5..., fetus 5O60.10X9..., other fetus