Pneumonia due to Pseudomonas

This code signifies an infection of the lung parenchyma specifically caused by Pseudomonas aeruginosa bacteria. This type of pneumonia can range from mild to severe, often presenting with symptoms like fever, cough with purulent sputum, and shortness of breath. It is particularly concerning in immunocompromised individuals or those with underlying lung conditions.

Assign this code when documentation explicitly states pneumonia due to Pseudomonas species. This typically occurs in hospital-acquired infections, ventilator-associated pneumonia, or in patients with cystic fibrosis or bronchiectasis. Supporting documentation includes positive sputum cultures, bronchoalveolar lavage (BAL) results, or physician notes directly linking Pseudomonas as the causative agent.

• Always confirm the specific bacterial etiology; do not assume Pseudomonas without explicit documentation.
• Code any associated underlying conditions, such as cystic fibrosis or immunosuppression, as secondary diagnoses.
• Distinguish from other bacterial pneumonias (e.g., Streptococcus pneumoniae) which have different code assignments.