ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.0 > O36.01 > O36.012 O36.012 Maternal care for anti-D [Rh] antibodies, second trimester Non-Billable/Non-Specific Codes O36.0120..., not applicable or unspecifiedO36.0121..., fetus 1O36.0122..., fetus 2O36.0123..., fetus 3O36.0124..., fetus 4O36.0125..., fetus 5O36.0129..., other fetus