| O31.8X30 | Other complications specific to multiple gestation, third trimester, not applicable or unspecified | BILLABLE CODE |
| O31.8X31 | Other complications specific to multiple gestation, third trimester, fetus 1 | BILLABLE CODE |
| O31.8X32 | Other complications specific to multiple gestation, third trimester, fetus 2 | BILLABLE CODE |
| O31.8X33 | Other complications specific to multiple gestation, third trimester, fetus 3 | BILLABLE CODE |
| O31.8X34 | Other complications specific to multiple gestation, third trimester, fetus 4 | BILLABLE CODE |
| O31.8X35 | Other complications specific to multiple gestation, third trimester, fetus 5 | BILLABLE CODE |
| O31.8X39 | Other complications specific to multiple gestation, third trimester, other fetus | BILLABLE CODE |
