O24.0 - Pre-existing diabetes mellitus, type 1, in pregnancy, childbirth and the puerperium
O24.01 - Pre-existing diabetes mellitus, type 1, in pregnancy
O24.011 - Pre-existing diabetes mellitus, type 1, in pregnancy, first trimester
O24.012 - Pre-existing diabetes mellitus, type 1, in pregnancy, second trimester
O24.013 - Pre-existing diabetes mellitus, type 1, in pregnancy, third trimester
O24.019 - Pre-existing diabetes mellitus, type 1, in pregnancy, unspecified trimester