Diseases of the Blood and Immune Mechanism

Conditions of the blood, the blood-forming organs, and the mechanisms of immunity, following ICD-10 Chapter III (Diseases of the Blood and Blood-Forming Organs and Certain Disorders Involving the Immune Mechanism). Belongs here: an autoimmune disease in which the immune system attacks the body's own tissue, an allergic reaction, and a disorder of blood cells or clotting not caused by cancer. Does not belong here: an autoimmune disease whose primary clinical presentation is confined to one organ system with its own chapter, such as an autoimmune skin condition, grouped under diseases of the skin and subcutaneous tissue.