Microscopic Colitis

Microscopic Colitis is indexed under Gastrointestinal, Inflammatory GI. Also known as collagenous colitis, lymphocytic colitis.

US prevalence
~700,000 people in the United States Source: NIDDK, Definition & Facts for Microscopic Colitis, last reviewed April 2021. This figure comes from a professional society, registry, or study rather than a federal source. Label: REPORTED.
ICD-10-CM codes
K52.83
Typical onset
Primarily >60; median age ~65
Course
episodic
Body systems
gastrointestinal
Sex differences
F:M ~3:1
Racial and ethnic differences
More common in white populations

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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