ICD-10-CM > M00-M99 > M05-M14 > M05 > M05.6 > M05.67 M05.67 Rheumatoid arthritis of ankle and foot with involvement of other organs and systems Non-Billable/Non-Specific Applicable To Rheumatoid arthritis of tarsus, metatarsus and phalanges with involvement of other organs and systems Codes M05.671Rheumatoid arthritis of right ankle and foot with involvement of other organs and systemsM05.672Rheumatoid arthritis of left ankle and foot with involvement of other organs and systemsM05.679Rheumatoid arthritis of unspecified ankle and foot with involvement of other organs and systems