Proteus (mirabilis) (morganii) causing dis classd elswhr

This code identifies an infection where the bacterium Proteus (specifically mirabilis or morganii) is the causative agent of a disease that is classified under another ICD-10-CM code. It indicates the specific bacterial etiology when the primary condition is coded elsewhere.

Use this code as a secondary diagnosis when documentation explicitly states Proteus mirabilis or Proteus morganii as the infectious agent responsible for a condition such as a urinary tract infection, wound infection, or sepsis. The primary diagnosis code will describe the specific disease manifestation.

• Always sequence this code after the code for the underlying disease caused by the Proteus infection.
• Ensure the documentation specifies Proteus mirabilis or Proteus morganii; other Proteus species may require a different code (e.g., B96.89).
• Do not use this code if the Proteus infection is the primary condition and there is a more specific code available for that condition that already includes the organism.