ICD-10-CM > M00-M99 > M05-M14 > M05 > M05.5 > M05.56 M05.56 Rheumatoid polyneuropathy with rheumatoid arthritis of knee Non-Billable/Non-Specific Codes M05.561Rheumatoid polyneuropathy with rheumatoid arthritis of right kneeM05.562Rheumatoid polyneuropathy with rheumatoid arthritis of left kneeM05.569Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified knee