Osteoarthritis

Osteoarthritis is indexed under Musculoskeletal & Connective Tissue, Degenerative Joint Disease. Also known as OA, degenerative joint disease.

US prevalence

>32.5 million U.S. adults Source: CDC Arthritis — Osteoarthritis (archived CDC page). Federal source. Label: VERIFIED.

ICD-10-CM codes

M15, M16, M17, M19

Typical onset

Rare <40; increases sharply >50; ~50% of those >65

Course

progressive

Body systems

musculoskeletal

Sex differences

F:M ~1.5-2:1 after age 50

Racial and ethnic differences

Higher prevalence and severity in Black Americans; knee OA higher in Black women

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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