Qualitative platelet defects

This code signifies a group of inherited or acquired disorders affecting the function of platelets, rather than their number. These defects impair the ability of platelets to adhere, aggregate, or release necessary factors for proper hemostasis, leading to abnormal bleeding tendencies.

Use this code when documentation specifies a qualitative platelet disorder, such as Glanzmann's thrombasthenia, Bernard-Soulier syndrome, or storage pool disease. Supporting documentation should include laboratory findings demonstrating impaired platelet function (e.g., abnormal platelet aggregation studies) despite a normal or near-normal platelet count.

• Differentiate from thrombocytopenia (low platelet count); this code is for functional defects.
• Look for specific diagnoses like "platelet dysfunction" or "thrombocytopathy" in the physician's notes.
• Ensure the documentation clearly states the qualitative nature of the defect, not just a general bleeding disorder.