D56.1 – Beta thalassemia

ICD-10-CM 2027 diagnosis code · Hemolytic anemias

Billable code

ICD-10-CM code D56.1

Code: D56.1 (claims format: D561)
Description: Beta thalassemia
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
Block: D55-D59 Hemolytic anemias
Parent codes: D56

Notes for D56.1

Applicable to:

Beta thalassemia major
Cooley's anemia
Homozygous beta thalassemia
Severe beta thalassemia
Thalassemia intermedia
Thalassemia major

Excludes1 (not coded here):

beta thalassemia minor (D56.3)
beta thalassemia trait (D56.3)
delta-beta thalassemia (D56.2)
hemoglobin E-beta thalassemia (D56.5)
sickle-cell beta thalassemia (D57.4-)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

D56 – Thalassemia

Excludes1 (not coded here):

sickle-cell thalassemia (D57.4-)

Index terms for D56.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in D56

D56.0 – Alpha thalassemiaBillable
D56.2 – Delta-beta thalassemiaBillable
D56.3 – Thalassemia minorBillable
D56.4 – Hereditary persistence of fetal hemoglobin [HPFH]Billable
D56.5 – Hemoglobin E-beta thalassemiaBillable
D56.8 – Other thalassemiasBillable
D56.9 – Thalassemia, unspecifiedBillable

Frequently asked questions

What is ICD-10 code D56.1?

D56.1 is the ICD-10-CM code for beta thalassemia, in the block D55-D59 (Hemolytic anemias).

Is D56.1 a billable code?

Yes. D56.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does D56.1 belong to?

It belongs to category D56 – Thalassemia.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.