2025
ICD-10-CM
Diagnosis
Code

D56.0 Alpha thalassemia

Billable
2016–2025

D56.0 is a billable/specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Alpha thalassemia.

Inclusion term

Alpha thalassemia major
Hemoglobin H Constant Spring
Hemoglobin H disease
Hydrops fetalis due to alpha thalassemia
Severe alpha thalassemia
Triple gene defect alpha thalassemia

Use additional code

Code, if applicable, for hydrops fetalis due to alpha thalassemia (P56.99)

Type 1 excludes

Alpha thalassemia trait or minor (D56.3)
Asymptomatic alpha thalassemia (D56.3)
Hydrops fetalis due to isoimmunization (P56.0)
Hydrops fetalis not due to immune hemolysis (P83.2)

Versions

2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code