Code	Title
O00-O9A	Pregnancy, childbirth and the puerperium (O00-O9A)
O30-O48	Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
O30	Multiple gestation
O30.2	Quadruplet pregnancy
O30.20	Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs
O30.201	Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester
O30.202	Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, second trimester
O30.203	Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, third trimester
O30.209	Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimester
O30.21	Quadruplet pregnancy with two or more monochorionic fetuses
O30.211	Quadruplet pregnancy with two or more monochorionic fetuses, first trimester
O30.212	Quadruplet pregnancy with two or more monochorionic fetuses, second trimester
O30.213	Quadruplet pregnancy with two or more monochorionic fetuses, third trimester
O30.219	Quadruplet pregnancy with two or more monochorionic fetuses, unspecified trimester
O30.22	Quadruplet pregnancy with two or more monoamniotic fetuses
O30.221	Quadruplet pregnancy with two or more monoamniotic fetuses, first trimester
O30.222	Quadruplet pregnancy with two or more monoamniotic fetuses, second trimester
O30.223	Quadruplet pregnancy with two or more monoamniotic fetuses, third trimester
O30.229	Quadruplet pregnancy with two or more monoamniotic fetuses, unspecified trimester
O30.23	Quadruplet pregnancy, quadrachorionic/quadra-amniotic
O30.231	Quadruplet pregnancy, quadrachorionic/quadra-amniotic, first trimester
O30.232	Quadruplet pregnancy, quadrachorionic/quadra-amniotic, second trimester
O30.233	Quadruplet pregnancy, quadrachorionic/quadra-amniotic, third trimester
O30.239	Quadruplet pregnancy, quadrachorionic/quadra-amniotic, unspecified trimester
O30.29	Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs
O30.291	Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimester
O30.292	Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, second trimester
O30.293	Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, third trimester
O30.299	Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, unspecified trimester