D76: Other specified diseases with participation of lymphoreticular and reticulohistiocytic tissue

D76.3: Other histiocytosis syndromes

The immune system protects the body from pathogens and foreign substances. The immune system can also destroy cells in the body that have pathologically changed. The body's immune system is made up of different types of immune cells. Some immune cells can destroy pathogens or foreign bodies themselves. Other immune cells produce certain antibodies.

Some immune cells eliminate waste substances, foreign substances and pathogens in tissue. There are various illnesses that affect these immune cells. Depending on the illness, the symptoms will differ greatly.