ICD-10 Code D63.8 – Anemia in other chronic diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D63.8 – Anemia in other chronic diseases classified elsewhere
What it is
This code identifies anemia that is caused by another chronic disease, but not specifically by chronic kidney disease or a neoplastic condition. Use it when the anemia is documented as secondary to a separate long-term illness.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include pallor, fatigue, weakness, and reduced exercise tolerance, with anemia noted in the setting of an underlying chronic disorder.
When to use this code
Use D63.8 when the record states the anemia is due to a chronic disease and the condition is not better classified elsewhere. It is appropriate when the provider links anemia to a nonrenal, nonmalignant chronic illness. If the cause is unclear, check documentation before assigning this code.
Do not use for
Do not use this code for anemia due to chronic kidney disease or anemia associated with neoplastic disease. Also avoid it when the chart does not clearly connect the anemia to another chronic condition.
Coding tip
Confirm the provider’s documented causal relationship before coding, and code the underlying chronic disease as directed.