D75.83 ThrombocytosisNon-billable header with 2 child codes.
D75.82 Heparin induced thrombocytopenia (HIT)D75.821 Non-immune heparin-induced thrombocytopeniaD75.822 Immune-mediated heparin-induced thrombocytopeniaD75.828 Other heparin-induced thrombocytopenia syndromeD75.829 Heparin-induced thrombocytopenia, unspecifiedD75.83 Thrombocytosis (this code)D75.838 Other thrombocytosisD75.839 Thrombocytosis, unspecifiedD75.84 Other platelet-activating anti-PF4 disordersD75.89 Other specified diseases of blood and blood-forming organsD75.9 Disease of blood and blood-forming organs, unspecified