All ICD10 Codes
Chapter 3

D50–D89: Diseases of the Blood and Blood-Forming Organs

Diseases of the Blood and Blood-Forming Organs diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • autoimmune disease (systemic) NOS (M35.9)
  • certain conditions originating in the perinatal period (P00-P96)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • human immunodeficiency virus [HIV] disease (B20)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
All CodesBillable Only
Internal Codes
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  • D69.5—

    Secondary thrombocytopenia

  • D69.51—

    Posttransfusion purpura

  • D69.59—

    Other secondary thrombocytopenia

  • D69.6—

    Thrombocytopenia, unspecified

  • D69.8—

    Other specified hemorrhagic conditions

  • D69.9—

    Hemorrhagic condition, unspecified

  • D70—

    Neutropenia

  • D70.0—

    Congenital agranulocytosis

  • D70.1—

    Agranulocytosis secondary to cancer chemotherapy

  • D70.2—

    Other drug-induced agranulocytosis

  • D70.3—

    Neutropenia due to infection

  • D70.4—

    Cyclic neutropenia

  • D70.8—

    Other neutropenia

  • D70.9—

    Neutropenia, unspecified

  • D71—

    Functional disorders of polymorphonuclear neutrophils

  • D71.1—

    Leukocyte adhesion deficiency

  • D71.8—

    Other functional disorders of polymorphonuclear neutrophils

  • D71.9—

    Functional disorders of polymorphonuclear neutrophils, unspecified

  • D72—

    Other disorders of white blood cells

  • D72.0—

    Genetic anomalies of leukocytes

  • D72.1—

    Eosinophilia

  • D72.10—

    Eosinophilia, unspecified

  • D72.11—

    Hypereosinophilic syndrome [HES]

  • D72.110—

    Idiopathic hypereosinophilic syndrome [IHES]

  • D72.111—

    Lymphocytic Variant Hypereosinophilic Syndrome [LHES]

  • D72.118—

    Other hypereosinophilic syndrome

  • D72.119—

    Hypereosinophilic syndrome [HES], unspecified

  • D72.12—

    Drug rash with eosinophilia and systemic symptoms syndrome

  • D72.18—

    Eosinophilia in diseases classified elsewhere

  • D72.19—

    Other eosinophilia

  • D72.8—

    Other specified disorders of white blood cells

  • D72.81—

    Decreased white blood cell count

  • D72.810—

    Lymphocytopenia

  • D72.818—

    Other decreased white blood cell count

  • D72.819—

    Decreased white blood cell count, unspecified

  • D72.82—

    Elevated white blood cell count

  • D72.820—

    Lymphocytosis (symptomatic)

  • D72.821—

    Monocytosis (symptomatic)

  • D72.822—

    Plasmacytosis

  • D72.823—

    Leukemoid reaction

  • D72.824—

    Basophilia

  • D72.825—

    Bandemia

  • D72.828—

    Other elevated white blood cell count

  • D72.829—

    Elevated white blood cell count, unspecified

  • D72.89—

    Other specified disorders of white blood cells

  • D72.9—

    Disorder of white blood cells, unspecified

  • D73—

    Diseases of spleen

  • D73.0—

    Hyposplenism

  • D73.1—

    Hypersplenism

  • D73.2—

    Chronic congestive splenomegaly

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