ICD-10-CM > O00-O9A > O30-O48 > O46 > O46.9 O46.9 Antepartum hemorrhage, unspecified Non-Billable/Non-Specific Codes O46.90Antepartum hemorrhage, unspecified, unspecified trimesterO46.91Antepartum hemorrhage, unspecified, first trimesterO46.92Antepartum hemorrhage, unspecified, second trimesterO46.93Antepartum hemorrhage, unspecified, third trimester