ICD-10-CM > D50-D89 > D55-D59 > D56 > D56.2 D56.2 Delta-beta thalassemia Billable/Specific Copy Code Copy Description Applicable To Homozygous delta-beta thalassemia Type 1 Excludes delta-beta thalassemia minor (D56.3)delta-beta thalassemia trait (D56.3)