Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium Use additional code (Chapter 1), to identify specific infectious or parasitic diseaseIncludes:the listed conditions when complicating the pregnant state, when aggravated by the pregnancy, or as a reason for obstetric careExcludes2herpes gestationis (O26.4-)infectious carrier state (O99.82-, O99.83-)obstetrical tetanus (A34)puerperal infection (O86.-)puerperal sepsis (O85)when the reason for maternal care is that the disease is known or suspected to have affected the fetus (O35-O36)