| O31.8X10 | Other complications specific to multiple gestation, first trimester, not applicable or unspecified | BILLABLE CODE |
| O31.8X11 | Other complications specific to multiple gestation, first trimester, fetus 1 | BILLABLE CODE |
| O31.8X12 | Other complications specific to multiple gestation, first trimester, fetus 2 | BILLABLE CODE |
| O31.8X13 | Other complications specific to multiple gestation, first trimester, fetus 3 | BILLABLE CODE |
| O31.8X14 | Other complications specific to multiple gestation, first trimester, fetus 4 | BILLABLE CODE |
| O31.8X15 | Other complications specific to multiple gestation, first trimester, fetus 5 | BILLABLE CODE |
| O31.8X19 | Other complications specific to multiple gestation, first trimester, other fetus | BILLABLE CODE |
