Essential Thrombocythemia

Essential Thrombocythemia is indexed under Hematologic, Myeloproliferative Neoplasms. Also known as ET, primary thrombocythemia.

US prevalence

~1-2.5 per 100,000 per year; prevalence ~24 per 100,000 Source: ASH; SEER. Cites federal and non-federal sources, and the record does not say which one gave this figure. Label: REPORTED.

ICD-10-CM codes

D47.3

Typical onset

Median age ~60; second peak 30s

Course

managed

Body systems

hematologic

Sex differences

F:M ~1.5-2:1

Racial and ethnic differences

Limited data

What this page does not establish

These figures describe populations, not individuals, and none of them is a diagnosis or a treatment recommendation. Prevalence estimates are approximate and reflect published ranges. Disparity figures are reported patterns, not causes.

Taxonomy last reviewed 2026-05-19. Each figure on the interactive page carries its own source and retrieval date, which can be later than this review.

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