ICD-10 Code D64.2 – Secondary sideroblastic anemia due to drugs and toxins (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D64.2 – Secondary sideroblastic anemia due to drugs and toxins
What it is
D64.2 identifies sideroblastic anemia caused by exposure to drugs or toxins. It means iron is present but not properly incorporated into red blood cells, leading to anemia.
Clinical signs
Clinical features vary; refer to documentation. Common findings include anemia symptoms and evidence of impaired red blood cell production, with a documented drug or toxic exposure as the cause.
When to use this code
Use D64.2 when the provider documents sideroblastic anemia secondary to a medication, chemical, or other toxin. Code it when the anemia is clearly linked to the exposure, not when the cause is unknown. Check documentation if the record only says anemia without a confirmed toxic or drug-related etiology.
Do not use for
Do not use this code for hereditary sideroblastic anemia or other non-toxic causes of anemia. If the chart does not specify drugs or toxins, check documentation rather than assuming D64.2.
Coding tip
Capture the offending drug or toxin in the record, but assign D64.2 only when the provider states the anemia is secondary to that exposure.