2026 ICD-10-CM Diagnosis Code D47.3Essential (hemorrhagic) thrombocythemia

ICD-10-CM Codes›C00–D49›D37-D48›D47

ICD-10-CM D47.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D47.3 is a billable ICD-10-CM diagnosis code for essential (hemorrhagic) thrombocythemia. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 814 through 816. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Coagulation and hemorrhagic disorders and Neoplasms of unspecified nature or uncertain behavior.

Code Identity

ICD-10-CM Code
D47.3
Billable Status
Yes — Valid for Submission
Code Describes
Essential (hemorrhagic) thrombocythemia
Short Description
Essential (hemorrhagic) thrombocythemia
Same as the full description in the CMS dataset.
Parent Code
D47
Other neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue

Code Classification

ChapterC00–D49Neoplasms
SectionD37-D48Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
CategoryD47Other neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue
This CodeD47.3Essential (hemorrhagic) thrombocythemia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Congenital splenomegaly
  • Essential thrombocythemia
  • Familial thrombocytosis
  • Increased platelet production
  • Myelofibrosis
  • Myelofibrosis due to another disorder
  • Platelet count above reference range
  • Platelet production finding
  • Post-essential thrombocythemia myelofibrosis
  • Thrombocythemia with distal limb defect
  • Thrombocytosis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Essential thrombocytosis
  • Idiopathic hemorrhagic thrombocythemia
  • Primary thrombocytosis

Type 2 Excludes

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.

    • Thrombocythemia(hemorrhagic)
      • essential
    • Thrombocythemia(hemorrhagic)
      • idiopathic
    • Thrombocythemia(hemorrhagic)
      • primary
    • Thrombocytosis
      • essential
    • Thrombocytosis
      • idiopathic
    • Thrombocytosis
      • primary

Clinical ClassificationClinical

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

CCSR BLD006
Coagulation and hemorrhagic disorders
Default principal diagnosis: inpatient No · outpatient No
CCSR NEO072
Neoplasms of unspecified nature or uncertain behavior
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Thrombocythemia, Essential

    a clinical syndrome characterized by repeated spontaneous hemorrhages and a remarkable increase in the number of circulating platelets.

  • Thrombocytosis

    increased numbers of platelets in the peripheral blood. (dorland, 27th ed)

Patient EducationClinical

Platelet Disorders

Platelets, also known as thrombocytes, are blood cells. They form in your bone marrow, a sponge-like tissue in your bones. Platelets play a major role in blood clotting. Normally, when one of your blood vessels is injured, you start to bleed.

Read the full article at MedlinePlus

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

Convert D47.3 to ICD-9-CMHistory

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

ICD-9-CM
238.71 Essntial thrombocythemia
Approximate The match is approximate rather than exact.

Code HistoryHistory

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

Questions About D47.3Overview

Is D47.3 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report essential (hemorrhagic) thrombocythemia on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D47.3 group to?

When essential (hemorrhagic) thrombocythemia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 814, 815, 816, with relative weights from 0.6320 to 2.1267 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D47.3?

Under the General Equivalence Mappings, essential (hemorrhagic) thrombocythemia converts to ICD-9-CM 238.71 (essntial thrombocythemia). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.