ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.1 > O36.11 > O36.113 O36.113 Maternal care for Anti-A sensitization, third trimester Non-Billable/Non-Specific Codes O36.1130..., not applicable or unspecifiedO36.1131..., fetus 1O36.1132..., fetus 2O36.1133..., fetus 3O36.1134..., fetus 4O36.1135..., fetus 5O36.1139..., other fetus