ICD-10 Code D64.1 – Secondary sideroblastic anemia due to disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D64.1 – Secondary sideroblastic anemia due to disease
What it is
D64.1 identifies anemia caused by an underlying disease process that interferes with normal red blood cell production. Use it when the record specifically documents secondary sideroblastic anemia due to disease.
Clinical signs
Patients may show general anemia findings such as fatigue, weakness, pallor, or shortness of breath. Clinical features vary; refer to documentation for the underlying disease and any marrow findings.
When to use this code
Use D64.1 when the provider links the anemia to another disease and documents it as secondary sideroblastic anemia. It may be appropriate when the chart notes marrow-related sideroblastic changes or a disease-driven anemia diagnosis. If the cause is unclear, check documentation before coding.
Do not use for
Do not use this code for iron deficiency anemia, unspecified anemia, or anemia without a documented disease cause. Do not assign it when the record only mentions sideroblastic changes without confirming secondary sideroblastic anemia due to disease.
Coding tip
Verify the linkage between the anemia and the underlying disease before assigning D64.1.