ICD-10-CM > M00-M99 > M05-M14 > M12 > M12.3 > M12.36 M12.36 Palindromic rheumatism, knee Non-Billable/Non-Specific Codes M12.361Palindromic rheumatism, right kneeM12.362Palindromic rheumatism, left kneeM12.369Palindromic rheumatism, unspecified knee