Gastroesophageal Reflux Disease

Gastroesophageal Reflux Disease is indexed under Gastrointestinal, Esophageal. Also known as GERD, acid reflux, reflux disease.

US prevalence

~20% of people in the United States have GERD Source: NIDDK — Definition & Facts for GER & GERD. Federal source. Label: VERIFIED.

ICD-10-CM codes

K21.0, K21.9

Typical onset

Any age; prevalence increases with age

Course

managed

Body systems

gastrointestinal

Sex differences

Roughly equal; ERD slightly more common in men

Racial and ethnic differences

Higher in white Americans for erosive disease and Barrett's

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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