ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.5 > O36.51 > O36.511 O36.511 Maternal care for known or suspected placental insufficiency, first trimester Non-Billable/Non-Specific Codes O36.5110..., not applicable or unspecifiedO36.5111..., fetus 1O36.5112..., fetus 2O36.5113..., fetus 3O36.5114..., fetus 4O36.5115..., fetus 5O36.5119..., other fetus