ICD-10 Code D59.9 – Acquired hemolytic anemia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D59.9 – Acquired hemolytic anemia, unspecified
What it is
This code identifies acquired hemolytic anemia when the cause is not specified in the record. It means red blood cells are being destroyed faster than the body can replace them.
Clinical signs
Typical findings include anemia-related fatigue, pallor, jaundice, dark urine, or an enlarged spleen. Clinical features vary; refer to documentation.
When to use this code
Use D59.9 when the provider documents acquired hemolytic anemia but does not name an underlying cause or subtype. It also fits when the record confirms hemolysis is acquired, yet the chart lacks enough detail for a more specific code. Check documentation if autoimmune, drug-induced, or other causes are mentioned.
Do not use for
Do not use this code for congenital hemolytic anemias or for hemolysis that is part of another clearly documented disorder. If the cause is known, code the specific condition instead.
Coding tip
Query for the cause and type of hemolysis before defaulting to unspecified coding.