ICD-10 Code D75.829 – Heparin-induced thrombocytopenia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D75.829 – Heparin-induced thrombocytopenia, unspecified
What it is
D75.829 identifies heparin-induced thrombocytopenia when the record does not specify the type or details. Use it for a heparin-related drop in platelets or suspected immune reaction documented without further clarification.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart notes thrombocytopenia after heparin exposure, with or without new thrombosis, skin changes at injection sites, or other signs of a heparin reaction.
When to use this code
Use this code when the provider documents heparin-induced thrombocytopenia but does not specify a more detailed category. It also fits when the condition is recorded as unspecified HIT, or when the note lacks enough detail to assign a more specific code. Check documentation for timing, type, and associated complications.
Do not use for
Do not use it for thrombocytopenia from other causes, including non-heparin drug reactions or unrelated platelet disorders. If the record specifies a different HIT type or a more defined diagnosis, code that instead.
Coding tip
Look for the exact provider wording; unspecified coding is appropriate only when the documentation does not support a more specific HIT code.