Pneumonia due to Mycoplasma pneumoniae

This code identifies pneumonia specifically caused by the bacterium Mycoplasma pneumoniae. This atypical pneumonia often presents with a more gradual onset and milder symptoms compared to typical bacterial pneumonias, sometimes referred to as "walking pneumonia."

Assign this code when the provider's documentation clearly states a diagnosis of pneumonia and explicitly identifies Mycoplasma pneumoniae as the causative organism. This diagnosis is typically supported by laboratory findings, such as positive Mycoplasma pneumoniae PCR or serology, or strong clinical suspicion in the absence of other identified pathogens.

• Ensure the documentation specifies Mycoplasma pneumoniae as the etiology; do not assume based on "atypical pneumonia" alone.
• Do not use this code for unspecified pneumonia or pneumonia due to other atypical organisms.
• Consider sequencing with codes for associated symptoms or complications, if documented.