Loeffler endocarditis

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Loeffler endocarditis

ORPHA:75566Disease

Also called Eosinophilic endocarditis

What it is

A rare restrictive cardiomyopathy characterized by hypereosinophilia and fibrous thickening of the endocardium, with usually large thrombi against the ventricle walls, that can lead to cardiovascular complications such as heart failure and thromboembolism. It manifests with symptoms like edema, fatigue and shortness of breath. It is usually secondary to eosinophil-associated tissue damage and is associated with idiopathic hypereosinophilic syndrome, chronic eosinophilic leukemia, carcinoma, or lymphoma.

Key facts

Age of onset
Adolescent, Adult, Childhood
Classified as
Disease

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

ICD-10 codes

I42.3filed under a broader ICD-10 category — shared with 1 other rare disease

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

MEDDRA 10052841MONDO 0019159UMLS C0206143

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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