Other reactive arthropathies, left shoulder

This diagnosis code signifies an inflammatory joint condition affecting the left shoulder, not caused by direct infection but rather as a reaction to an infection elsewhere in the body. It encompasses various forms of reactive arthritis, such as Reiter's syndrome or post-streptococcal arthritis, when the left shoulder is the primary site of arthritic manifestation.

Apply this code when documentation clearly indicates a diagnosis of reactive arthropathy specifically impacting the left shoulder joint. Supporting clinical notes should detail the presence of inflammatory arthritis in the left shoulder and evidence or suspicion of a preceding or concurrent infection (e.g., gastrointestinal, genitourinary).

• Ensure the documentation specifies "left shoulder" to avoid laterality errors.
• Distinguish from septic arthritis (M00.-) where the joint itself is infected.
• Code the underlying infection, if known, as a primary diagnosis when applicable, following sequencing guidelines.