Monoarthritis, not elsewhere classified, right shoulder

This code signifies inflammation affecting a single joint, specifically the right shoulder, that is not classified under more specific arthropathies. It indicates a localized inflammatory process within the right glenohumeral joint or surrounding structures, without an identified systemic cause or specific infectious agent.

Apply this code when documentation clearly states "monoarthritis of the right shoulder" and no further specific diagnosis (e.g., rheumatoid arthritis, gout, infectious arthritis) is provided or confirmed. This code is appropriate for initial presentations or when a definitive etiology is still under investigation, and the inflammation is confined to the right shoulder.

• Ensure documentation specifies "right shoulder" and excludes other joints.
• Do not use if a more specific diagnosis for the monoarthritis (e.g., septic arthritis, crystal-induced arthropathy) is identified; instead, code the specific condition.
• This code is often used as a provisional diagnosis or when the underlying cause of the monoarthritis is yet to be determined.