ICD-10-CM > M00-M99 > M05-M14 > M08 > M08.9 > M08.96 M08.96 Juvenile arthritis, unspecified, knee Non-Billable/Non-Specific Codes M08.961Juvenile arthritis, unspecified, right kneeM08.962Juvenile arthritis, unspecified, left kneeM08.969Juvenile arthritis, unspecified, unspecified knee