| O21 | Excessive vomiting in pregnancy | NON-BILLABLE CODE |
| O21.0 | Mild hyperemesis gravidarum | BILLABLE CODE |
| O21.2 | Late vomiting of pregnancy | BILLABLE CODE |
| O21.8 | Other vomiting complicating pregnancy | BILLABLE CODE |
| O21.9 | Vomiting of pregnancy, unspecified | BILLABLE CODE |
