Essential (hemorrhagic) thrombocythemia

**Inclusion terms:** - Essential thrombocytosis - Idiopathic hemorrhagic thrombocythemia - Primary thrombocytosis

**Excludes2:** - reactive thrombocytosis (D75.838) - secondary thrombocytosis (D75.838) - thrombocythemia NOS (D75.839) - thrombocytosis NOS (D75.839)