A48.2
BillableNonpneumonic Legionnaires' disease [Pontiac fever]
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Pontiac fever is a mild form of Legionnaires' disease caused by Legionella bacteria that affects the lungs without causing pneumonia. It typically causes flu-like symptoms such as fever, chills, and muscle aches that resolve on their own within a few days.
Coding Tips
- •This code is used when Legionella infection is confirmed but pneumonia is NOT present; if pneumonia develops, use A48.1 instead
- •Document the source of exposure (water systems, air conditioning units, hot tubs) when available, as this is often an outbreak-related condition requiring public health reporting
Code Hierarchy
└A48Other bacterial diseases, not elsewhere classified└A48.2Nonpneumonic Legionnaires' disease [Pontiac fever]
└A48.2Nonpneumonic Legionnaires' disease [Pontiac fever]