Other secondary thrombocytopenia

This code signifies a reduction in platelet count that is not primary (idiopathic) but rather a consequence of an underlying disease, medication, or other external factor. It represents a broad category for secondary thrombocytopenias that do not fit more specific classifications.

Apply this code when documentation clearly indicates a low platelet count secondary to another condition, and a more specific ICD-10-CM code for the underlying cause of thrombocytopenia is not available or appropriate. This is often used when the specific etiology of the secondary thrombocytopenia is identified but lacks a dedicated code.

• Always code the underlying cause of the secondary thrombocytopenia first, if known and documented.
• Avoid using this code if a more specific code for secondary thrombocytopenia (e.g., drug-induced, post-transfusion) is available.
• Ensure documentation specifies "secondary" and the underlying condition or factor contributing to the low platelet count.