The ICD-9 code range DISEASES OF THE BLOOD AND BLOOD-FORMING ORGANS for 280-289 is medical classification list by the World Health Organization (WHO).
Iron deficiency anemias
Other deficiency anemias
Hereditary hemolytic anemias
Thalassemias
Sickle-cell disease
Acquired hemolytic anemias
Non-autoimmune hemolytic anemias
Aplastic anemia
Constitutional aplastic anemia
Pancytopenia
Other specified aplastic anemias
Other and unspecified anemias
Anemia in chronic illness
Coagulation defects
Hemorrhagic disorder due to intrinsic circulating anticoagulants, antibodies, or inhibitors
Purpura and other hemorrhagic conditions
Primary thrombocytopenia
Secondary thrombocytopenia
Diseases of white blood cells
Agranulocytosis
Decreased white blood cell count
Elevated white blood cell count
Other diseases of blood and blood-forming organs
Other diseases of spleen
Other specified diseases of blood and blood-forming organs