Primary biliary cholangitis/primary…

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Primary biliary cholangitis/primary sclerosing cholangitis and autoimmune hepatitis overlap syndrome

ORPHA:562639Disease

Also called Overlap syndromes of autoimmune liver diseases · PBC/PSC and AIH overlap syndrome

What it is

A rare hepatic disease characterized by the overlap of primary biliary cholangitis and/or primary sclerosing cholangitis with autoimmune hepatitis, defined by the presence of at least two of the three recognized biochemical, serological, and histological criteria of each disease. The onset of the overlapping diseases can be simultaneous or sequential, with a variable interval of up to several years. Age of onset, gender predisposition, and clinical phenotype vary between each of the diseases, and the clinical presentation ranges from asymptomatic disease or unspecific symptoms such as fatigue, arthralgia, and pruritus, to established cirrhosis and decompensation, or also acute, fulminant hepatitis and liver failure. Association with extrahepatic autoimmune diseases is common.

Key facts

Age of onset
All ages
Inheritance
Not applicable
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

K75.4filed under a broader ICD-10 category — shared with 4 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 0034189UMLS C5680117

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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