ICD-10-CM > M00-M99 > M05-M14 > M05 > M05.8 > M05.82 M05.82 Other rheumatoid arthritis with rheumatoid factor of elbow Non-Billable/Non-Specific Codes M05.821Other rheumatoid arthritis with rheumatoid factor of right elbowM05.822Other rheumatoid arthritis with rheumatoid factor of left elbowM05.829Other rheumatoid arthritis with rheumatoid factor of unspecified elbow