ICD-10-CM > D50-D89 > D55-D59 > D56 D56 Thalassemia Non-Billable/Non-Specific Type 1 Excludes sickle-cell thalassemia (D57.4-) Codes D56.0Alpha thalassemiaD56.1Beta thalassemiaD56.2Delta-beta thalassemiaD56.3Thalassemia minorD56.4Hereditary persistence of fetal hemoglobin [HPFH]D56.5Hemoglobin E-beta thalassemiaD56.8Other thalassemiasD56.9Thalassemia, unspecified