O30.81 Other specified multiple gestation with two or more monochorionic fetusesNon-billable header with 4 child codes.
O30.811 Other specified multiple gestation with two or more monochorionic fetuses, first trimesterO30.812 Other specified multiple gestation with two or more monochorionic fetuses, second trimesterO30.813 Other specified multiple gestation with two or more monochorionic fetuses, third trimesterO30.819 Other specified multiple gestation with two or more monochorionic fetuses, unspecified trimesterO30.80 Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacsO30.801 Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs, first trimesterO30.802 Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs, second trimesterO30.803 Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs, third trimesterO30.809 Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimesterO30.81 Other specified multiple gestation with two or more monochorionic fetuses (this code)O30.811 Other specified multiple gestation with two or more monochorionic fetuses, first trimesterO30.812 Other specified multiple gestation with two or more monochorionic fetuses, second trimesterO30.813 Other specified multiple gestation with two or more monochorionic fetuses, third trimesterO30.819 Other specified multiple gestation with two or more monochorionic fetuses, unspecified trimesterO30.82 Other specified multiple gestation with two or more monoamniotic fetuses