Hemophilus influenzae as the cause of diseases classd elswhr

This code identifies Hemophilus influenzae as the bacterial agent responsible for an infection that is primarily classified under another ICD-10-CM code. It signifies that H. influenzae is the etiology of a disease process, such as pneumonia, meningitis, or cellulitis, which has its own specific diagnostic code.

Use this code as a secondary diagnosis when the medical record clearly documents H. influenzae as the confirmed causative organism for an infection classified elsewhere. This typically occurs after laboratory confirmation (e.g., culture, PCR) identifies H. influenzae as the pathogen.

• Always sequence this code after the code for the specific infection caused by H. influenzae.
• Ensure documentation explicitly states H. influenzae as the etiology; avoid using it based solely on presumptive diagnoses.
• Do not use this code if the infection is a specific H. influenzae disease that has its own combination code (e.g., H. influenzae meningitis, which is coded directly).