D56.3

Thalassemia minor

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 15 never code together

Excludes1

alpha thalassemia (D56.0)D56.0 D56.0
beta thalassemia (D56.1)D56.1 D56.1
delta-beta thalassemia (D56.2)D56.2 D56.2
hemoglobin E-beta thalassemia (D56.5)D56.5 D56.5
sickle-cell trait (D57.3)D57.3 D57.3

D56code

Excludes1

Excludes2

autoimmune disease (systemic) NOS (M35.9)M35.9
certain conditions originating in the perinatal period (P00-P96)P00-P96
complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
human immunodeficiency virus [HIV] disease (B20)B20
injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
neoplasms (C00-D49)C00-D49
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 8

Inclusion terms

Index entries leading here 2

Trait (s)
- hemoglobin
  - abnormal NEC D58.2
    - with thalassemia D56.3
- Lepore D56.3
Thalassemia (anemia) (disease) D56.9
- alpha (major) (severe) (triple gene defect) D56.0
  - silent carrier D56.3
  - trait D56.3
  - minor D56.3
- beta (severe) D56.1
  - minor D56.3
  - trait D56.3
- delta-beta (homozygous) D56.2
  - minor D56.3
  - trait D56.3
- minor D56.3
- trait D56.3

Alongside this code 7 same parent — D56

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.