D56: Thalassemia
Codes under D56 (Thalassemia). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| D56.0 | Alpha thalassemia | ✓ |
| D56.0 | Alpha thalassemia | ✓ |
| D56.1 | Beta thalassemia | ✓ |
| D56.1 | Beta thalassemia | ✓ |
| D56.2 | Delta-beta thalassemia | ✓ |
| D56.2 | Delta-beta thalassemia | ✓ |
| D56.3 | Thalassemia minor | ✓ |
| D56.3 | Thalassemia minor | ✓ |
| D56.4 | Hereditary persistence of fetal hemoglobin [HPFH] | ✓ |
| D56.4 | Hereditary persistence of fetal hemoglobin [HPFH] | ✓ |
| D56.5 | Hemoglobin E-beta thalassemia | ✓ |
| D56.5 | Hemoglobin E-beta thalassemia | ✓ |
| D56.8 | Other thalassemias | ✓ |
| D56.8 | Other thalassemias | ✓ |
| D56.9 | Thalassemia, unspecified | ✓ |
| D56.9 | Thalassemia, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code D56?
D56 is an ICD-10-CM category covering Thalassemia. It contains 16 more specific diagnosis codes, 16 of which are billable.
Is D56 a billable code?
No — D56 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example D56.0 — Alpha thalassemia). 16 of the 16 codes under D56 are billable.
What codes fall under D56?
D56 includes D56.0, D56.0, D56.1, D56.1, D56.2, plus 11 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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