FA20 Rheumatoid arthritis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

Rheumatoid arthritis (RA) is persistent and/or erosive disease that is defined as the confirmed presence of synovitis in at least 1 joint, absence of an alternative diagnosis that better explains the synovitis, and achievement of a total score of 6 or greater (of a possible 10) from the individual scores in 4 domains: number and site of involved joints, serologic abnormality, elevated acute-phase response, and symptom duration.

exclusions

• rheumatoid arthritis, juvenile  (FA24.1)
• Acute rheumatic fever  (1B40-1B42)

code elsewhere

• Respiratory disorders in rheumatoid arthritis  (CB05.1)

sections/codes in this section ()

• Seropositive rheumatoid arthritis  (FA20.0)
• Seronegative rheumatoid arthritis  (FA20.1)
• Rheumatoid arthritis, serology unspecified  (FA20.Z)

postcoordination

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