ICD-10-CM > O00-O9A > O30-O48 > O41 > O41.1 > O41.14 > O41.142 O41.142 Placentitis, second trimester Non-Billable/Non-Specific Codes O41.1420..., not applicable or unspecifiedO41.1421..., fetus 1O41.1422..., fetus 2O41.1423..., fetus 3O41.1424..., fetus 4O41.1425..., fetus 5O41.1429..., other fetus