Staphylococcal arthritis, unspecified hand

This code signifies an inflammatory joint condition affecting the hand, specifically caused by a Staphylococcus bacterial infection. It indicates an acute or chronic infection within the synovial fluid and joint tissues, leading to pain, swelling, and restricted movement in the affected hand. The "unspecified" nature means the laterality (left or right hand) is not documented.

Apply this code when documentation confirms a diagnosis of septic arthritis of the hand, with laboratory or clinical evidence pointing to Staphylococcus as the causative organism. This is appropriate when the medical record does not specify whether the left or right hand is affected.

• Always strive for laterality (left or right hand) if documented, using more specific codes like M00.041 or M00.042.
• Ensure documentation clearly identifies Staphylococcus as the infectious agent; otherwise, consider codes for pyogenic arthritis of unspecified etiology.
• Sequence this code as the primary diagnosis when it is the reason for the encounter, followed by codes for any associated systemic infections if applicable.