D56.0
Alpha thalassemia
HCC risk adjustment mapping
CMS-HCC ESRD V24
Coagulation Defects and Other Specified Hematological Disorders
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
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)
code, if applicable, for hydrops fetalis due to alpha thalassemia (P56.99)
Alpha thalassemia major Hemoglobin H Constant Spring Hemoglobin H disease Hydrops fetalis due to alpha thalassemia Severe alpha thalassemia Triple gene defect alpha thalassemia
sickle-cell thalassemia (D57.4-)
autoimmune disease (systemic) NOS (M35.9) certain conditions originating in the perinatal period (P00-P96) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) human immunodeficiency virus [HIV] disease (B20) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Official Guidelines for D56.0
FY 2026 ›Find D56.0 in the alphabetic index
8 index paths lead to this code
- Hb › Bart's disease
- Hemoglobin › H Constant Spring
- Thalassemia › alpha
- Disease, diseased › hemoglobin or Hb › Bart's
- Disease, diseased › hemoglobin or Hb › H
- Disease, diseased › hemoglobin or Hb › H › Constant Spring
- Hydrops › fetalis › due to › alpha thalassemia
- Hydrops › newborn › due to › alpha thalassemia