Primary autoimmune enteropathy

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Primary autoimmune enteropathy

ORPHA:522037Disease

What it is

A rare intestinal disease characterized by immune-mediated injury of the intestinal mucosa, leading to severe, chronic, intractable diarrhea, malabsorption, and severe weight loss or failure to thrive. Characteristic histologic findings in the small intestine include partial or complete blunting of the villi, deep crypt lymphocytosis, increased crypt apoptosis, and minimal surface intraepithelial lymphocytosis. In addition, the stomach, colon, and esophagus may also be involved. Circulating autoantibodies against enterocytes and/or goblet cells are found in many, but not all, patients. The diagnosis requires exclusion of other causes of villous atrophy.

Key facts

Inheritance
Not applicable
Classified as
Disease

ICD-10 codes

K90.8filed under a broader ICD-10 category — shared with 5 other rare diseases

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

MONDO 0033862UMLS C5681441

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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