ICD-10-CM > D50-D89 > D70-D77 > D75 > D75.8 > D75.83 D75.83 Thrombocytosis Non-Billable/Non-Specific Type 2 Excludes essential thrombocythemia (D47.3) Codes D75.838Other thrombocytosisD75.839Thrombocytosis, unspecified