ICD-10-CM > D50-D89 > D70-D77 > D75 > D75.8 > D75.82 D75.82 Heparin induced thrombocytopenia (HIT) Non-Billable/Non-Specific Use Additional code, if applicable, for adverse effect of heparin (T45.515-) Codes D75.821Non-immune heparin-induced thrombocytopeniaD75.822Immune-mediated heparin-induced thrombocytopeniaD75.828Other heparin-induced thrombocytopenia syndromeD75.829Heparin-induced thrombocytopenia, unspecified