O31.8X1 Other complications specific to multiple gestation, first trimesterNon-billable ICD-10-CM code.
O31.33X4 Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 4O31.33X5 Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 5O31.33X9 Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, other fetusO31.8 Other complications specific to multiple gestationO31.8X Other complications specific to multiple gestationO31.8X1 Other complications specific to multiple gestation, first trimester (this code)O31.8X10 Other complications specific to multiple gestation, first trimester, not applicable or unspecifiedO31.8X11 Other complications specific to multiple gestation, first trimester, fetus 1O31.8X12 Other complications specific to multiple gestation, first trimester, fetus 2O31.8X13 Other complications specific to multiple gestation, first trimester, fetus 3O31.8X14 Other complications specific to multiple gestation, first trimester, fetus 4