O30.03 - Twin pregnancy, monochorionic/diamniotic O30.0 - Twin pregnancy O30.03 - Twin pregnancy, monochorionic/diamniotic
O30.031 - Twin pregnancy, monochorionic/diamniotic, first trimester O30.032 - Twin pregnancy, monochorionic/diamniotic, second trimester O30.033 - Twin pregnancy, monochorionic/diamniotic, third trimester O30.039 - Twin pregnancy, monochorionic/diamniotic, unspecified trimester