ICD-10-CM > O00-O9A > O30-O48 > O41 > O41.1 > O41.10 > O41.102 O41.102 Infection of amniotic sac and membranes, unspecified, second trimester Non-Billable/Non-Specific Codes O41.1020..., not applicable or unspecifiedO41.1021..., fetus 1O41.1022..., fetus 2O41.1023..., fetus 3O41.1024..., fetus 4O41.1025..., fetus 5O41.1029..., other fetus