Rheumatoid arthritis unspecified rheumatoid factor presence icd 10 July 8, 2019 16 32 64 128 Rheumatoid arthritis involving multiple sites unspecified rheumatoid factor presence icd 10 Rheumatoid arthritis involving unspecified site unspecified rheumatoid factor presence icd 10 Rheumatoid arthritis involving both hands unspecified rheumatoid factor presence icd 10