ICD-10 Code D64.9 – Anemia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D64.9 – Anemia, unspecified
What it is
This code identifies anemia when the record confirms low red blood cell status but does not specify the cause, type, or severity. Use it when the documentation simply states anemia without further detail.
Clinical signs
Common findings may include fatigue, weakness, pallor, or shortness of breath, but clinical features vary; refer to documentation. The chart should support that anemia is present, even if the underlying etiology is not described.
When to use this code
Use D64.9 when the provider documents “anemia” and does not identify iron deficiency, chronic disease, blood loss, or another specific type. It also fits when the note confirms anemia but the workup is incomplete or the cause remains unspecified. You should not infer a more specific diagnosis.
Do not use for
Do not use this code if the documentation names a specific anemia type, such as iron deficiency or hemolytic anemia. Also avoid it when anemia is ruled out or when the record only shows abnormal laboratory results without a diagnosis.
Coding tip
If the note is vague, query for the anemia type before defaulting to D64.9.