ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.0 > O36.01 > O36.011 O36.011 Maternal care for anti-D [Rh] antibodies, first trimester Non-Billable/Non-Specific Codes O36.0110..., not applicable or unspecifiedO36.0111..., fetus 1O36.0112..., fetus 2O36.0113..., fetus 3O36.0114..., fetus 4O36.0115..., fetus 5O36.0119..., other fetus