| ICD-10 Code | Description |
| O43.101 | Malformation of placenta, unspecified, first trimester |
| O43.102 | Malformation of placenta, unspecified, second trimester |
| O43.103 | Malformation of placenta, unspecified, third trimester |
| O43.109 | Malformation of placenta, unspecified, unspecified trimester |
| O43.111 | Circumvallate placenta, first trimester |
| O43.112 | Circumvallate placenta, second trimester |
| O43.113 | Circumvallate placenta, third trimester |
| O43.119 | Circumvallate placenta, unspecified trimester |
| O43.121 | Velamentous insertion of umbilical cord, first trimester |
| O43.122 | Velamentous insertion of umbilical cord, second trimester |
| O43.123 | Velamentous insertion of umbilical cord, third trimester |
| O43.129 | Velamentous insertion of umbilical cord, unspecified trimester |
| O43.191 | Other malformation of placenta, first trimester |
| O43.192 | Other malformation of placenta, second trimester |
| O43.193 | Other malformation of placenta, third trimester |
| O43.199 | Other malformation of placenta, unspecified trimester |
