ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.0 > O36.09 > O36.092 O36.092 Maternal care for other rhesus isoimmunization, second trimester Non-Billable/Non-Specific Codes O36.0920..., not applicable or unspecifiedO36.0921..., fetus 1O36.0922..., fetus 2O36.0923..., fetus 3O36.0924..., fetus 4O36.0925..., fetus 5O36.0929..., other fetus