Chronic Thromboembolic Pulmonary Hypertension

Chronic Thromboembolic Pulmonary Hypertension is indexed under Respiratory, Pulmonary Vascular. Also known as CTEPH, WHO Group 4 PH.

US prevalence

~3,000-5,000 diagnosed; likely underdiagnosed (0.5-3.8% of PE survivors) Source: CHEST; Eur Respir J; PHA. This figure comes from a professional society, registry, or study rather than a federal source. Label: REPORTED.

ICD-10-CM codes

I27.24

Typical onset

Age 50-70; typically months-years after PE

Course

progressive

Body systems

pulmonary, cardiovascular

Sex differences

Roughly equal or slight M predominance

Racial and ethnic differences

Underdiagnosed in minority populations; referral bias to PTE centers

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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