Catalog

Juvenile idiopathic polyarthritis, rheumatoid factor negative

No MMS code

Link to WHO Definition

Juvenile idiopathic polyarthritis, rheumatoid factor negative – http://id.who.int/icd/entity/1176663320

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).