ICD-10 Code D69.59 – Other secondary thrombocytopenia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D69.59 – Other secondary thrombocytopenia
What it is
D69.59 identifies thrombocytopenia caused by another condition, rather than a primary platelet disorder. Use it when the low platelet count is secondary and the documentation does not support a more specific code.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include easy bruising, petechiae, mucosal bleeding, or an incidental low platelet count noted during evaluation of an underlying illness.
When to use this code
Use D69.59 when the provider documents secondary thrombocytopenia and names a cause, such as another disease process, but no more specific thrombocytopenia code applies. It also fits cases where the record clearly links thrombocytopenia to a secondary condition and you are not coding a separate primary platelet disorder. Check documentation if the cause is unclear.
Do not use for
Do not use this code for primary thrombocytopenia, hereditary platelet disorders, or thrombocytopenia with a more specific documented cause that has its own code. Check documentation for the correct etiology.
Coding tip
Always code the underlying condition first when it is documented as the cause of the secondary thrombocytopenia.