Direct infct of l shldr in infec/parastc dis classd elswhr

This code signifies an inflammatory arthropathy of the left shoulder joint directly caused by an underlying infectious or parasitic disease. It represents a secondary manifestation where the infection, originating elsewhere in the body, has directly invaded and inflamed the shoulder joint.

Apply this code when documentation clearly indicates an infectious or parasitic etiology for left shoulder arthritis, and the primary infection is classified by another ICD-10-CM code. This is appropriate for conditions like septic arthritis of the shoulder secondary to a systemic infection (e.g., tuberculosis, Lyme disease, or fungal infections).

• Always sequence the underlying infectious or parasitic disease code first, followed by this code.
• Ensure documentation specifies "left shoulder" and a direct infectious cause, not just an inflammatory response.
• Distinguish from M03.X12 (postinfectious arthropathy), which implies an immune-mediated response rather than direct infection of the joint.