Preferred Label : Juvenile idiopathic polyarthritis, rheumatoid factor negative;
ICD-11 definition : Rheumatoid factor-negative polyarthritis is a term used to describe a group of poorly
defined heterogenous conditions that incorporates forms of rheumatoid factor-negative
polyarthritis and forms of oligoarticular arthritis that become extensive in less
than 6 months after onset. Rheumatoid factor-negative polyarthritis represents around
15-20% of cases of juvenile idiopathic arthritis (JIA).;
ICD-11 synonym : chronic juvenile polyarthritis; juvenile idiopathic arthritis, polyarthritis, rheumatoid factor negative; juvenile chronic arthritis, polyarticular seronegative; juvenile seronegative polyarthritis; juvenile polyarthritis;
ICD-11 inclusion : chronic juvenile polyarthritis;
Rheumatoid factor-negative polyarthritis is a term used to describe a group of poorly
defined heterogenous conditions that incorporates forms of rheumatoid factor-negative
polyarthritis and forms of oligoarticular arthritis that become extensive in less
than 6 months after onset. Rheumatoid factor-negative polyarthritis represents around
15-20% of cases of juvenile idiopathic arthritis (JIA).
