M05.8 - Other rheumatoid arthritis with rheumatoid factor
M05.87 - Other rheumatoid arthritis with rheumatoid factor of ankle and foot
M05.871 - Other rheumatoid arthritis with rheumatoid factor of right ankle and foot
M05.872 - Other rheumatoid arthritis with rheumatoid factor of left ankle and foot
M05.879 - Other rheumatoid arthritis with rheumatoid factor of unspecified ankle and foot