2026 ICD-10-CM Diagnosis Code D57.412Sickle-cell thalassemia, unspecified, with splenic sequestration

ICD-10-CM Codes›D50–D89›D55-D59›D57

ICD-10-CM D57.412
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D57.412 is a billable ICD-10-CM diagnosis code for sickle-cell thalassemia, unspecified, with splenic sequestration. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 811 through 812. Coders also document this condition as acute sickle cell splenic sequestration crisis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sickle cell trait/anemia.

Code Identity

ICD-10-CM Code
D57.412
Billable Status
Yes — Valid for Submission
Code Describes
Sickle-cell thalassemia, unspecified, with splenic sequestration
Short Description
Sickle-cell thalassemia, unsp, with splenic sequestration
Parent Code
D57.41
Sickle-cell thalassemia, unspecified, with crisis

Code Classification

ChapterD50–D89Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
SectionD55-D59Hemolytic anemias
CategoryD57Sickle-cell disorders
This CodeD57.412Sickle-cell thalassemia, unspecified, with splenic sequestration

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute sickle cell splenic sequestration crisis
  • Acute splenic sequestration of spleen due to sickle cell thalassemia with crisis
  • Hemoglobin S sickling disorder with crisis
  • Hemoglobin SS disease with crisis
  • Red blood cell sequestration in spleen
  • Sickle cell-hemoglobin SS disease

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disease, diseased
      • sickle-cell
        • thalassemia
          • with
            • splenic sequestration
    • Hemoglobinopathy(mixed)
      • sickle-cell
        • with thalassemia
          • with
            • splenic sequestration
    • Microdrepanocytosis
      • with
        • splenic sequestration

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR BLD005
Sickle cell trait/anemia
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Sickle Cell Disease

Sickle cell disease (SCD) is a group of inherited red blood cell disorders. If you have SCD, there is a problem with your hemoglobin. Hemoglobin is a protein in red blood cells that carries oxygen throughout the body. With SCD, the hemoglobin forms into stiff rods within the red blood cells. This changes the shape of the red blood cells.

The full article covers:

  • What is sickle cell disease (SCD)?
  • What causes sickle cell disease (SCD)?
  • Who is more likely to have sickle cell disease (SCD)?
  • What are the symptoms of sickle cell disease (SCD)?
  • How is sickle cell disease (SCD) diagnosed?
  • What are the treatments for sickle cell disease (SCD)?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert D57.412 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
282.42 Thlassemia Hb-S w crisis
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
289.52 Splenic sequestration
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2020No changes
FY 2021RevisedCode revised
FY 2022–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D57.412Overview

Is D57.412 (Sickle-cell thalassemia, unspecified, with crisis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report sickle-cell thalassemia, unspecified, with splenic sequestration on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D57.412 group to?

When sickle-cell thalassemia, unspecified, with splenic sequestration is the principal diagnosis on an inpatient stay, it groups to MS-DRG 811, 812, with relative weights from 0.9182 to 1.4043 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D57.412?

Under the General Equivalence Mappings, sickle-cell thalassemia, unspecified, with splenic sequestration converts to ICD-9-CM 282.42 (thlassemia Hb-S w crisis) and 289.52 (splenic sequestration). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.