--- O98.911 Unspecified maternal infectious and parasitic disease complicating pregnancy, first trimester

--- O98.912 Unspecified maternal infectious and parasitic disease complicating pregnancy, second trimester

--- O98.913 Unspecified maternal infectious and parasitic disease complicating pregnancy, third trimester

--- O98.919 Unspecified maternal infectious and parasitic disease complicating pregnancy, unspecified trimester