ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.8 > O36.89 > O36.891 O36.891 Maternal care for other specified fetal problems, first trimester Non-Billable/Non-Specific Codes O36.8910..., not applicable or unspecifiedO36.8911..., fetus 1O36.8912..., fetus 2O36.8913..., fetus 3O36.8914..., fetus 4O36.8915..., fetus 5O36.8919..., other fetus