P00-P04: Fetus and newborn affected by maternal factors and by complications of pregnancy, labour and delivery

P04: Fetus and newborn affected by noxious influences transmitted via placenta or breast milk

The P04 group refers to conditions affecting a fetus or newborn that result from harmful substances transmitted through the placenta or breast milk. These harmful substances, also known as noxious influences, can include various drugs, toxins, or diseases the mother has been exposed to during pregnancy or postpartum. The type and severity of resulting conditions range widely, from minor issues to potentially serious complications. Symptoms can differ greatly, but may include poor growth, developmental delays, abnormal behavior, and difficulties with feeding or breathing. The progression of these conditions can differ as well, depending on the specific influence, when the exposure occurred and how promptly it was addressed. The nervous system, digestive system, lungs, and other body systems can be affected.