ICD-10-CM · Chapter 3 · D50-D89
D56 Thalassemia
Excludes 1 (cannot be coded together)
- sickle-cell thalassemia (D57.4-)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| D56..0 | Alpha thalassemia | Yes |
| D56..1 | Beta thalassemia | Yes |
| D56..2 | Delta-beta thalassemia | Yes |
| D56..3 | Thalassemia minor | Yes |
| D56..4 | Hereditary persistence of fetal hemoglobin [HPFH] | Yes |
| D56..5 | Hemoglobin E-beta thalassemia | Yes |
| D56..8 | Other thalassemias | Yes |
| D56..9 | Thalassemia, unspecified | Yes |
Last reviewed: September 2026