Pneumonia due to other virus not elsewhere classified

This code represents pneumonia caused by a viral agent that is not specifically classified elsewhere in the ICD-9-CM system. It indicates an acute inflammatory condition of the lung parenchyma, characterized by consolidation and impaired gas exchange, where the causative virus is identified but lacks a more specific ICD-9-CM code.

Use this code when documentation confirms a viral pneumonia and the specific viral etiology (e.g., adenovirus, RSV in adults, parainfluenza) is known but does not have its own distinct ICD-9-CM code. This code is appropriate when the physician explicitly states "viral pneumonia due to other specified virus" or similar.

• Ensure the documentation clearly specifies a viral etiology and rules out bacterial or other non-viral causes.
• Do not use this code for viral pneumonia where a more specific ICD-9-CM code exists (e.g., influenza with pneumonia).
• Consider sequencing this code as the principal diagnosis if it is the primary reason for the admission/encounter, followed by any associated manifestations.