ICD-10-CM > O00-O9A > O30-O48 > O45 > O45.8 > O45.8X O45.8X Other premature separation of placenta Non-Billable/Non-Specific Codes O45.8X1Other 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