Rheumatoid factor icd 10 cm code July 8, 2019 16 32 64 128 Rheumatoid factor positive icd 10 cm code Rheumatoid arthritis of multiple sites with negative rheumatoid factor icd 10 cm code Rheumatoid factor icd 10 code Rheumatoid factor icd 10 Icd 10 rheumatoid arthritis with rheumatoid factor Icd 10 code for rheumatoid arthritis with rheumatoid factor