ICD-10 Code D52.9 – Folate deficiency anemia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D52.9 – Folate deficiency anemia, unspecified
What it is
D52.9 identifies anemia caused by folate deficiency when the record does not specify the exact type or cause. Use it when the clinician documents folate deficiency anemia without further detail.
Clinical signs
Clinical features may include fatigue, pallor, weakness, and other findings consistent with anemia. Macrocytic changes can occur, but if the documentation is unclear, check documentation.
When to use this code
Use D52.9 when the provider diagnoses folate deficiency anemia and does not document a more specific category. It also fits when the chart confirms folate deficiency with anemia, but the cause, severity, or subtype is not stated. If the note names a different deficiency or a more specific folate-related condition, code that instead.
Do not use for
Do not use this code for anemia due to vitamin B12 deficiency, iron deficiency, or other specified nutritional anemias. Do not use it when the record supports a more specific folate deficiency code.
Coding tip
Code the most specific folate deficiency anemia documented; if specificity is missing, D52.9 is the appropriate fallback.