ICD-10 Code D69.49 – Other primary thrombocytopenia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D69.49 – Other primary thrombocytopenia
What it is
Use this code for primary thrombocytopenia that is not classified elsewhere. It describes a low platelet disorder considered primary rather than secondary to another disease.
Clinical signs
Clinical features vary; refer to documentation. Commonly, patients may have easy bruising, petechiae, mucosal bleeding, or other findings consistent with thrombocytopenia.
When to use this code
Use D69.49 when the provider documents other primary thrombocytopenia and does not identify a more specific thrombocytopenic disorder. This code fits cases where the condition is primary and the record supports thrombocytopenia as the main diagnosis. Do not assume etiology; code only what is documented.
Do not use for
Do not use this code for thrombocytopenia due to another condition, such as medication, infection, or a systemic disease. Check documentation when the record names a specific thrombocytopenic syndrome or secondary cause.
Coding tip
Verify that “primary” is documented before assigning D69.49, and query the provider if the cause or type is unclear.