ICD-10-CM > O00-O9A > O30-O48 > O43 > O43.1 O43.1 Malformation of placenta Non-Billable/Non-Specific Codes O43.10Malformation of placenta, unspecifiedO43.101Malformation of placenta, unspecified, first trimesterO43.102Malformation of placenta, unspecified, second trimesterO43.103Malformation of placenta, unspecified, third trimesterO43.109Malformation of placenta, unspecified, unspecified trimesterO43.11Circumvallate placentaO43.111Circumvallate placenta, first trimesterO43.112Circumvallate placenta, second trimesterO43.113Circumvallate placenta, third trimesterO43.119Circumvallate placenta, unspecified trimesterO43.12Velamentous insertion of umbilical cordO43.121Velamentous insertion of umbilical cord, first trimesterO43.122Velamentous insertion of umbilical cord, second trimesterO43.123Velamentous insertion of umbilical cord, third trimesterO43.129Velamentous insertion of umbilical cord, unspecified trimesterO43.19Other malformation of placentaO43.191Other malformation of placenta, first trimesterO43.192Other malformation of placenta, second trimesterO43.193Other malformation of placenta, third trimesterO43.199Other malformation of placenta, unspecified trimester