| O31.8X90 | Other complications specific to multiple gestation, unspecified trimester, not applicable or unspecified | BILLABLE CODE |
| O31.8X91 | Other complications specific to multiple gestation, unspecified trimester, fetus 1 | BILLABLE CODE |
| O31.8X92 | Other complications specific to multiple gestation, unspecified trimester, fetus 2 | BILLABLE CODE |
| O31.8X93 | Other complications specific to multiple gestation, unspecified trimester, fetus 3 | BILLABLE CODE |
| O31.8X94 | Other complications specific to multiple gestation, unspecified trimester, fetus 4 | BILLABLE CODE |
| O31.8X95 | Other complications specific to multiple gestation, unspecified trimester, fetus 5 | BILLABLE CODE |
| O31.8X99 | Other complications specific to multiple gestation, unspecified trimester, other fetus | BILLABLE CODE |
