Staphylococcal arthritis, right knee

This diagnosis code signifies an inflammatory condition of the right knee joint caused by a Staphylococcus bacterial infection. It represents a specific form of infectious arthritis where the synovial fluid and joint tissues are invaded by staphylococcal organisms, leading to pain, swelling, and restricted movement.

This code is appropriate for patients diagnosed with septic arthritis of the right knee, where laboratory cultures or clinical evidence confirm Staphylococcus as the causative pathogen. Documentation should clearly indicate the specific joint affected (right knee) and the identified bacterial etiology.

• Ensure documentation explicitly states "right knee" and identifies Staphylococcus as the infectious agent.
• Do not use this code for non-infectious arthritis or arthritis caused by other bacterial species.
• Consider sequencing this code with codes for any associated systemic infection (e.g., sepsis) if present and documented.