Asthma

Asthma is indexed under Respiratory, Obstructive Lung Disease. Also known as bronchial asthma, reactive airway disease.

US prevalence

~25 million (~8% of adults, ~7% of children) Source: CDC NHIS 2022. Federal source. Label: VERIFIED.

ICD-10-CM codes

J45, J45.2, J45.5

Typical onset

Often childhood onset; adult-onset common, especially in women

Course

managed

Body systems

pulmonary

Sex differences

Boys > girls in childhood; women > men in adulthood

Racial and ethnic differences

Black Americans: ~10.6% (highest); Puerto Rican Americans also disproportionately affected

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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