Arthritis due to other bacteria, unspecified joint

This code signifies an inflammatory joint condition caused by a bacterial infection, where the specific bacterial agent is known to be something other than the commonly specified bacteria (e.g., staphylococcus, streptococcus, etc.), but the affected joint is not documented. It represents a form of septic arthritis where the bacterial etiology is identified as "other" and the anatomical location is unknown.

Apply this code when documentation confirms bacterial arthritis due to a bacterium not explicitly listed in more specific M00.8 subcategories, and the medical record does not specify which joint is affected. This is appropriate when laboratory results identify a less common bacterial pathogen, but the joint involved is either generalized or not precisely documented.

• Avoid using this code if the specific joint affected is documented; instead, use a more precise M00.8 code with a fifth character indicating the joint.
• Ensure the documentation clearly states "other bacteria" or identifies a specific bacterium not covered by more granular M00.0-M00.7 codes.
• Always sequence this code after the underlying bacterial infection (if applicable and still active) and any associated systemic conditions.