ICD-11 classes
01 Certain infectious or parasitic diseases
Other bacterial diseases
1C19 — Legionellosis
1C19.0 — Nonpneumonic Legionnaires' disease

ICD-11 1C19.0 — Nonpneumonic Legionnaires' disease

The non-pneumonic form (Pontiac disease) is an acute, self-limiting influenza-like illness usually lasting 2–5 days. The incubation period is from a few and up to 48 hours. The main symptoms are fever, chills, headache, malaise and muscle pain (myalgia).

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.