Chronic postrheumatic arthropathy, unspecified site

This diagnosis code represents a chronic, non-erosive arthropathy characterized by ulnar deviation and subluxation of the fingers, often associated with systemic lupus erythematosus or other connective tissue diseases, rather than acute rheumatic fever. It describes the long-term joint involvement resulting from a prior rheumatic process, specifically Jaccoud's arthropathy.

Use this code for patients presenting with the characteristic deformities of Jaccoud's arthropathy, such as reversible ulnar deviation of the metacarpophalangeal joints, in the absence of active inflammation. Documentation should clearly indicate a history of a rheumatic condition (e.g., SLE) and the presence of chronic, non-destructive joint changes consistent with Jaccoud's.

• Do not confuse with rheumatoid arthritis (M05.-, M06.-) or acute rheumatic fever with cardiac involvement (I00).
• Ensure documentation specifies "Jaccoud's arthropathy" or describes the characteristic non-erosive, reducible deformities.
• This code is for an unspecified site; if a specific joint is documented, consider if a more precise code is available within the M12.0 subcategory.