B90-B94: Sequelae of infectious and parasitic diseases

Sequelae of infectious and parasitic diseases, encompasses a group of conditions resulting from complications or lingering effects following an episode of an infectious or parasitic disease. These conditions can affect various systems of the body, depending upon the nature of the infection or parasite that was initially present. Such diseases are typically transmitted through vectors like insects, ingestion of contaminated food or water, or contact with an infected person. The symptoms and disease progression are varied and dependent on the primary condition, but can include fatigue, pain, disability and other chronic problems. These sequelae not only affect a person's physical health but can significantly impair their quality of life. To precise, these conditions are not new infections or re-infections, but are the residual effects or damages brought about by a past infection or parasitic disease. Infrequent but severe complications can also include organ damage, neurological disorders, or cardiovascular problems.