Polyarticular juvenile idiopathic arthritis icd 10 July 8, 2019 16 32 64 128 Seronegative polyarticular juvenile idiopathic arthritis icd 10 Polyarticular course juvenile idiopathic arthritis icd 10 Polyarticular rf positive juvenile idiopathic arthritis icd 10 Rheumatoid factor negative polyarticular juvenile idiopathic arthritis icd 10