Alpha thalassemia
Notes: Alpha thalassemia major ; Hemoglobin H Constant Spring ; Hemoglobin H disease ; Hydrops fetalis due to alpha thalassemia ; Severe alpha thalassemia ; Triple gene defect alpha thalassemia ; code, if applicable, for hydrops fetalis due to alpha thalassemia (P56.99) ; 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)