ICD-10-CM > M00-M99 > M05-M14 > M05 > M05.8 > M05.84 M05.84 Other rheumatoid arthritis with rheumatoid factor of hand Non-Billable/Non-Specific Codes M05.841Other rheumatoid arthritis with rheumatoid factor of right handM05.842Other rheumatoid arthritis with rheumatoid factor of left handM05.849Other rheumatoid arthritis with rheumatoid factor of unspecified hand