ICD-10 Code D46.0 – Refractory anemia without ring sideroblasts, so stated (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D46.0 – Refractory anemia without ring sideroblasts, so stated
What it is
D46.0 identifies refractory anemia without ring sideroblasts, a myelodysplastic syndrome in which the bone marrow does not make healthy red blood cells effectively. Use it when the diagnosis is documented exactly and ring sideroblasts are not present.
Clinical signs
Typical findings include persistent anemia and related symptoms such as fatigue, weakness, or pallor. Clinical features vary; refer to documentation, and confirm that the record specifically describes refractory anemia without ring sideroblasts.
When to use this code
Use D46.0 when the provider documents refractory anemia without ring sideroblasts, so stated, or clearly identifies this specific myelodysplastic syndrome subtype. It may also fit when the note states refractory anemia and explicitly excludes ring sideroblasts. If the subtype is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for other myelodysplastic syndromes, anemia of another cause, or cases where ring sideroblasts are present. If the chart does not support this exact diagnosis, check documentation.
Coding tip
Code the most specific MDS subtype documented, and verify whether ring sideroblasts are mentioned before selecting D46.0.