D75.82Heparin induced thrombocytopenia (HIT)

D75.82 is the ICD-10-CM diagnosis code for Heparin induced thrombocytopenia (HIT). It belongs to category D75 (other and unspecified diseases of blood and blood-forming organs), block D70-D77 (other disorders of blood and blood-forming organs) and chapter 3 (diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within D75.8 (other specified diseases of blood and blood-forming organs), D75.82 is specifically for Heparin induced thrombocytopenia (HIT). Related codes cover myelofibrosis (D75.81), thrombocytosis (D75.83), other platelet-activating anti-PF4 disorders (D75.84) and other specified diseases of blood and blood-forming organs (D75.89).

To report this condition, pick the subcode that matches the documentation: D75.821 (thrombocytopenia), D75.822 (thrombocytopenia), D75.828 (syndrome) and D75.829 (unspecified).

Use an additional code, if applicable, for adverse effect of heparin (T45.515-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2023 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 289.84 (heparin-induced thrombocytopenia (HIT)).