Blood diseases include various types of anemia (chronic, sickle-cell) and hemophilia and other coagulation disorders. Circulatory system problems include chronic venous insufficiency (CVI), varicose veins, Raynaud's disease, and peripheral arterial disease. In addition, the lymphatic system, composed of lymph nodes, is a closely related part of the circulatory system. Social Security has disability listings for most of these blood-related medical conditions, which set out the requirements for qualifying for disability benefits for each condition. This can speed up the process for getting Social Security Disability Insurance (SSDI) or SSI disability benefits.