O99.5 - Diseases of the respiratory system complicating pregnancy, childbirth and the puerperium
O99.51 - Diseases of the respiratory system complicating pregnancy
O99.511 - Diseases of the respiratory system complicating pregnancy, first trimester
O99.512 - Diseases of the respiratory system complicating pregnancy, second trimester
O99.513 - Diseases of the respiratory system complicating pregnancy, third trimester
O99.519 - Diseases of the respiratory system complicating pregnancy, unspecified trimester