ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.1 > O36.11 > O36.119 O36.119 Maternal care for Anti-A sensitization, unspecified trimester Non-Billable/Non-Specific Codes O36.1190..., not applicable or unspecifiedO36.1191..., fetus 1O36.1192..., fetus 2O36.1193..., fetus 3O36.1194..., fetus 4O36.1195..., fetus 5O36.1199..., other fetus