D56.3 Thalassemia minor
The ICD-10-CM code for Thalassemia minor is D56.3 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- D55-D59: Hemolytic anemias (D55-D59)
- Category D56
- 9 codes (8 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to D56.3:
- Trait (s) › Lepore
- Thalassemia (anemia) (disease) › minor
- Thalassemia (anemia) (disease) › trait
- Thalassemia (anemia) (disease) › beta (severe) › minor
- Thalassemia (anemia) (disease) › alpha (major) (severe) (triple gene defect) › silent carrier
- Thalassemia (anemia) (disease) › beta (severe) › trait
- Thalassemia (anemia) (disease) › alpha (major) (severe) (triple gene defect) › minor
- Thalassemia (anemia) (disease) › alpha (major) (severe) (triple gene defect) › trait
Inclusion Terms
- Alpha thalassemia minor
- Alpha thalassemia silent carrier
- Alpha thalassemia trait
- Beta thalassemia minor
- Beta thalassemia trait
- Delta-beta thalassemia minor
- Delta-beta thalassemia trait
- Thalassemia trait NOS
U.S. Hospital Utilization
- An estimated 32,065 U.S. inpatient stays in 2023 included D56.3 among the documented diagnoses.
- 100 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
Chapter 3 TOC entry3. Chapter 3: Disease of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89) ............................................................................................. 39
Reserved for future guideline expansionReserved for future guideline expansion ...................................................................................... 39
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026