Hemophilus influenzae [H. influenzae] infection in conditions classified elsewhere and of unspecified site

This code indicates an infection caused by Hemophilus influenzae that is a manifestation of another underlying condition or where the specific anatomical site of the infection is not documented. It signifies a systemic or localized H. influenzae infection that is secondary to, or associated with, another primary diagnosis.

Use this code when documentation confirms an H. influenzae infection, but the specific site (e.g., pneumonia, meningitis, otitis media) is not specified, or when the infection is clearly stated as a complication or manifestation of another disease process. This code is appropriate when the infection is not the primary reason for the encounter but is a significant co-morbidity or secondary diagnosis.

• Always sequence this code after the primary condition if the H. influenzae infection is a manifestation of another disease.
• Avoid using this code if a more specific site-specific H. influenzae infection code (e.g., meningitis, pneumonia) is available and documented.
• Query the provider for a more specific site of infection if only "H. influenzae infection" is documented without further detail.