Pneumonia in anthrax

This code identifies a specific manifestation of anthrax infection, where the Bacillus anthracis bacteria primarily affects the lungs, leading to pneumonia. This form of anthrax, often acquired through inhalation of spores, is characterized by severe respiratory symptoms and systemic illness.

Assign this code when documentation clearly indicates a diagnosis of pneumonia directly caused by anthrax. This typically occurs in cases of inhalational anthrax, where the infection has progressed to involve the pulmonary system. Supporting documentation should include a confirmed diagnosis of anthrax and clinical evidence of pneumonia.

• Always ensure documentation specifies pneumonia as a direct result of anthrax infection, not merely co-occurring.
• Consider sequencing this code as the primary diagnosis if the pneumonia is the chief reason for the encounter.
• Do not confuse with other types of pneumonia; the etiology must be explicitly linked to anthrax.