2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Malignant Neoplasm Of Lymphatic And Hematopoietic Tissue 200-208 > Lymphoid Leukemia 204.* > 2006 ICD-9-CM Diagnosis 204.0 Lymphoid leukemia acute View the most recent version of ICD-9-CM 204.0 A quickly progressing disease in which too many immature white blood cells called lymphoblasts are found in the blood and bone marrow. Leukemia with an acute onset, characterized by the presence of lymphoblasts or Burkitt cells in the bone marrow and the peripheral blood. It includes the precursor B lymphoblastic leukemia, precursor T lymphoblastic leukemia, and Burkitt's leukemia. Lymphocytic leukemia where cells show little differentiation. There are three major subgroups (FAB L1, L2, & L3) based on distinguishing characteristics of the blast cells. Adult and childhood forms of the disease show biological differences as well. 204.0 is a non-specific code that cannot be used to specify a diagnosis 204.0 contains 5 index entries View the ICD-9-CM Volume 1 204.* hierarchy 204.0 Excludes acute exacerbation of chronic lymphoid leukemia (204.1)  Index entries containing 204.0: Leukemia, leukemic (congenital) (M9800/3) 208.9 lymphatic (M9820/3) 204.9 acute (M9821/3) 204.0 lymphoblastic (M9821/3) 204.0 lymphocytic (M9820/3) 204.9 acute (M9821/3) 204.0 lymphoid (M9820/3) 204.9 acute (M9821/3) 204.0 blastic (M9821/3) 204.0