Current
J22 — Unspecified acute lower respiratory infection
Part of Chapter 10: Diseases of the respiratory system , block Other acute lower respiratory infections (J20-J22) .
Official Notes
Inclusion Terms
Acute (lower) respiratory (tract) infection NOS
Excludes1
upper respiratory infection (acute) ( J06.9 )
Child Codes
J22 has no child codes in the FY 2027 release -- it is used on its own.
Referenced By
Official notes on these codes cite J22.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS