D56 Thalassemia

The ICD-10-CM code for Thalassemia is D56 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)

Section

D55-D59: Hemolytic anemias (D55-D59)

Category D56

9 codes (8 billable)

FY2026 Status

Stable since FY2024

Official Coding Guidelines

Chapter 3 TOC entry

3. Chapter 3: Disease of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89) ............................................................................................. 39

Reserved for future guideline expansion

Reserved for future guideline expansion ...................................................................................... 39

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool