D56.3

Billable

Thalassemia minor

D56.3 is the ICD-10-CM code for Thalassemia minor. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
D50-D89
Parent
D56
Edition
FY2026

D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

Includes

  • Alpha thalassemia minor
  • Alpha thalassemia silent carrier
  • Alpha thalassemia trait
  • Beta thalassemia minor
  • Beta thalassemia trait
  • Delta-beta thalassemia minor
  • Delta-beta thalassemia trait
  • Thalassemia trait NOS

Excludes1 — not coded here

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

Frequently asked questions

What is ICD-10 code D56.3?
D56.3 is the ICD-10-CM code for "Thalassemia minor". It falls under D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
Is D56.3 a billable code?
Yes — D56.3 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from D56.3?
Excludes1 (not coded here): alpha thalassemia (D56.0); beta thalassemia (D56.1); delta-beta thalassemia (D56.2); hemoglobin E-beta thalassemia (D56.5).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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