Primary pneumonic plague

This code represents primary pneumonic plague, a severe and highly contagious bacterial infection caused by Yersinia pestis. It specifically describes the lung manifestation of plague, characterized by rapid onset pneumonia, hemoptysis, and respiratory failure, often leading to death if untreated.

Assign this code for confirmed cases of primary pneumonic plague, typically identified through laboratory testing (e.g., culture, PCR) from respiratory specimens. Documentation should clearly indicate the patient's symptoms are consistent with pneumonia and specify the etiology as plague.

• Differentiate from secondary pneumonic plague (e.g., from untreated bubonic plague), which would be coded differently.
• Ensure documentation specifies "primary" pneumonic plague to support this code.
• Consider sequencing with codes for associated symptoms or complications, such as respiratory failure.