Arthritis due to other bacteria, right knee

This code signifies an inflammatory joint condition of the right knee caused by a bacterial infection other than those specifically classified elsewhere (e.g., gonococcal, meningococcal). It represents a septic arthritis where the causative organism is identified as bacterial but not a more specific type.

Apply this code when documentation confirms bacterial arthritis affecting the right knee, and the specific bacterial agent is known to be something other than Neisseria gonorrhoeae or Neisseria meningitidis. Supporting documentation should include culture results or physician's statement identifying the bacterial etiology.

• Ensure the documentation specifies "right knee" and confirms a bacterial etiology.
• Do not use this code if the bacterial agent is specified as gonococcal (A54.43) or meningococcal (A39.83).
• Always sequence this code first if it represents the primary reason for the encounter, followed by codes for the specific bacterial organism if known and documented.