O30.1

Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs

Triplet pregnancy with two or more monochorionic fetuses

Triplet pregnancy with two or more monoamniotic fetuses

Triplet pregnancy, trichorionic/triamniotic

Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs

Twin pregnancy

Quadruplet pregnancy

Other specified multiple gestation

Multiple gestation, unspecified