--- O30.111 Triplet pregnancy with two or more monochorionic fetuses, first trimester

--- O30.112 Triplet pregnancy with two or more monochorionic fetuses, second trimester

--- O30.113 Triplet pregnancy with two or more monochorionic fetuses, third trimester

--- O30.119 Triplet pregnancy with two or more monochorionic fetuses, unspecified trimester