D47.3 Essential (hemorrhagic) thrombocythemia

The ICD-10-CM code for Essential (hemorrhagic) thrombocythemia is D47.3 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

2: Neoplasms (C00-D49)

Section

D37-D48: Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48)

Category D47

14 codes (11 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to D47.3:

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

Inclusion Terms

• Essential thrombocytosis
• Idiopathic hemorrhagic thrombocythemia
• Primary thrombocytosis

U.S. Hospital Utilization

• An estimated 15,545 U.S. inpatient stays in 2023 included D47.3 among the documented diagnoses.
• 250 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)