ICD-10-CM > O00-O9A > O30-O48 > O45 > O45.8 O45.8 Other premature separation of placenta Non-Billable/Non-Specific Codes O45.8XOther premature separation of placentaO45.8X1Other premature separation of placenta, first trimesterO45.8X2Other premature separation of placenta, second trimesterO45.8X3Other premature separation of placenta, third trimesterO45.8X9Other premature separation of placenta, unspecified trimester