Pneumonia, organism unspecified

This code signifies an acute inflammatory condition of the lung parenchyma, characterized by consolidation and impaired gas exchange, where the specific causative microorganism has not been identified. It represents a general diagnosis of pneumonia without further etiological specification.

This code is appropriate when a patient presents with clinical and radiological evidence of pneumonia, but diagnostic testing (e.g., sputum culture, blood culture, rapid antigen tests) has not been performed, is pending, or has yielded inconclusive results regarding the causative pathogen. It is used when the provider documents "pneumonia, unspecified organism" or similar.

• Avoid using this code if the organism is known; instead, code to the specific type of pneumonia (e.g., streptococcal, viral).
• If a specific organism is identified after initial coding, update the diagnosis to reflect the confirmed etiology.
• Always review the entire medical record for any mention of a specific pathogen before defaulting to this unspecified code.