Rheumatoid Arthritis

Rheumatoid Arthritis is indexed under Musculoskeletal & Connective Tissue, Inflammatory Arthritis. Also known as RA.

US prevalence

~1.3 million people, about 0.6% of the U.S. adult population Source: NIAMS — Accelerating Medicines Partnership RA/SLE overview. Cites federal and non-federal sources, and the record does not say which one gave this figure. Label: REPORTED.

ICD-10-CM codes

M05, M06

Typical onset

30-60 years; peak onset 40-60

Course

progressive

Body systems

musculoskeletal, pulmonary, cardiovascular

Sex differences

F:M ~2-3:1

Racial and ethnic differences

Higher in American Indian/Alaska Native populations; Black Americans may have more severe disease

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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