ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.5 > O36.51 O36.51 Maternal care for known or suspected placental insufficiency Non-Billable/Non-Specific Codes O36.511Maternal care for known or suspected placental insufficiency, first trimesterO36.5110..., not applicable or unspecifiedO36.5111..., fetus 1O36.5112..., fetus 2O36.5113..., fetus 3O36.5114..., fetus 4O36.5115..., fetus 5O36.5119..., other fetusO36.512Maternal care for known or suspected placental insufficiency, second trimesterO36.5120..., not applicable or unspecifiedO36.5121..., fetus 1O36.5122..., fetus 2O36.5123..., fetus 3O36.5124..., fetus 4O36.5125..., fetus 5O36.5129..., other fetusO36.513Maternal care for known or suspected placental insufficiency, third trimesterO36.5130..., not applicable or unspecifiedO36.5131..., fetus 1O36.5132..., fetus 2O36.5133..., fetus 3O36.5134..., fetus 4O36.5135..., fetus 5O36.5139..., other fetusO36.519Maternal care for known or suspected placental insufficiency, unspecified trimesterO36.5190..., not applicable or unspecifiedO36.5191..., fetus 1O36.5192..., fetus 2O36.5193..., fetus 3O36.5194..., fetus 4O36.5195..., fetus 5O36.5199..., other fetus