III: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

D65-D69: Coagulation defects, purpura and other haemorrhagic conditions

Coagulation defects, purpura, and other haemorrhagic conditions generally refer to a group of abnormalities that affect the body's ability to control blood clotting or stop bleeding. Coagulation defects can be caused by a variety of factors, such as vitamin K deficiency, liver disease, or genetic disorders like haemophilia. They often lead to excessive or prolonged bleeding, both internally and externally. Purpura, on the other hand, is characterized by purple or red discolourations on the skin caused by bleeding under the skin's surface, often related to conditions affecting blood vessels or platelets. Symptoms of these conditions vary but often include easy bruising, nosebleeds, blood in urine or stools, and joint pain. Over time, if untreated, these conditions can lead to serious complications like organ damage due to internal bleeding. These conditions affect the blood, immune, and sometimes nervous systems.