Pneumonia due to Hemophilus influenzae [H. influenzae]

This code signifies pneumonia specifically caused by the bacterium Haemophilus influenzae. It represents an acute inflammatory condition of the lung parenchyma, characterized by consolidation and often accompanied by symptoms such as fever, cough, and dyspnea, where H. influenzae has been identified as the causative agent.

Apply this code when documentation clearly indicates a diagnosis of pneumonia and laboratory findings (e.g., sputum culture, blood culture, PCR) confirm Haemophilus influenzae as the etiologic agent. This is appropriate for both community-acquired and healthcare-associated pneumonia when H. influenzae is the identified pathogen.

• Ensure physician documentation explicitly states "pneumonia due to H. influenzae" or provides sufficient clinical and laboratory evidence to support this causal link.
• Do not use this code for pneumonia where H. influenzae is merely isolated from the respiratory tract without being identified as the primary cause of the pneumonia.
• Consider co-existing conditions and complications, such as sepsis or empyema, and code them separately as appropriate.