Current
J21 — Acute bronchiolitis
Part of Chapter 10: Diseases of the respiratory system , block Other acute lower respiratory infections (J20-J22) .
Official Notes
Includes
acute bronchiolitis with bronchospasm
Excludes2
respiratory bronchiolitis interstitial lung disease ( J84.115 )
Child Codes
Referenced By
Official notes on these codes cite J21.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS