ICD-10-CM > O00-O9A > O30-O48 > O44 > O44.2 O44.2 Partial placenta previa without hemorrhage Non-Billable/Non-Specific Applicable To Marginal placenta previa, NOS or without hemorrhage Codes O44.20Partial placenta previa NOS or without hemorrhage, unspecified trimesterO44.21Partial placenta previa NOS or without hemorrhage, first trimesterO44.22Partial placenta previa NOS or without hemorrhage, second trimesterO44.23Partial placenta previa NOS or without hemorrhage, third trimester