D56.9

Billable

ChapterD50–D89

Ranksubcategory

Official Description

Thalassemia, unspecified

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 3: Diseases of the Blood and Blood-Forming Organs (D50-D89).

Instructional Notes

Includes

Mediterranean anemia (with other hemoglobinopathy)

General instructions are available for the parent sections:

View CH3 Notes View D56 Notes

Clinical Hierarchy

CH3Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)

D55-D59Hemolytic anemias (D55-D59)

D56Thalassemia

D56.9Thalassemia, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to D56.9:

categoryD56

Thalassemia

View context instructions

chapterCH3

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

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to D56.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

12 raw paths

Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound)4 unique routes

Mediterranean (with other hemoglobinopathy)→D56.9

microelliptopoikilocytic (Rietti-Greppi- Micheli)→D56.9

Rietti-Greppi-Micheli→D56.9

thalassemia→D56.9

Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)1 unique routes

in (due to)

thalassemia NEC→D56.9

Disease, diseased4 unique routes

hemoglobin or Hb(3 variants)

abnormal (mixed) NEC

with thalassemia→D56.9

H (Hb-H) (thalassemia)

with other abnormal hemoglobin NEC→D56.9

I thalassemia→D56.9

high fetal gene or hemoglobin thalassemia→D56.9

Leptocytosis, hereditary1 unique routes

Direct index entry→D56.9

Rietti-Greppi-Micheli anemia1 unique routes

Direct index entry→D56.9

Thalassemia (anemia) (disease)1 unique routes

Direct index entry→D56.9

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 791

Prematurity with Major Problems

DRG 793

Full Term Neonate with Major Problems

DRG 811

Red Blood Cell Disorders with MCC

DRG 812

Red Blood Cell Disorders without MCC

Cross Reference

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