Other reactive arthropathies, left hand

This code signifies an inflammatory joint condition affecting the left hand that is triggered by an infection elsewhere in the body, but is not classified as a specific reactive arthropathy like Reiter's syndrome. It represents an immune response where the body's immune system mistakenly attacks its own joint tissues following an infection.

Apply this code when documentation specifies a reactive arthropathy of the left hand that does not fit into more specific categories (e.g., M02.3- for Reiter's disease). Supporting documentation should clearly indicate an inflammatory arthritis of the left hand, a preceding or concurrent infection, and the exclusion of other specific arthropathies.

• Always code the underlying infection first, if known and active, followed by this code.
• Distinguish from infectious arthritis (M00.-) where the joint itself is infected.
• Ensure laterality is clearly documented for the left hand; do not use for bilateral or unspecified hand involvement.