O23 - Infections of genitourinary tract in pregnancy
O23.3 - Infections of other parts of urinary tract in pregnancy
O23.30 - Infections of other parts of urinary tract in pregnancy, unspecified trimester
O23.31 - Infections of other parts of urinary tract in pregnancy, first trimester
O23.32 - Infections of other parts of urinary tract in pregnancy, second trimester
O23.33 - Infections of other parts of urinary tract in pregnancy, third trimester