D56.0
Alpha thalassemia
Billable
Code Hierarchy
D56D56.0
Coding Guidelines
Inclusion Terms
- Alpha thalassemia major
- Hemoglobin H Constant Spring
- Hemoglobin H disease
- Hydrops fetalis due to alpha thalassemia
- Severe alpha thalassemia
- Triple gene defect alpha thalassemia
Excludes1 (Mutually Exclusive)
These codes should never be used together with D56.0
Use Additional Code
- code, if applicable, for hydrops fetalis due to alpha thalassemia (P56.99)


