Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes M00-M99 – Diseases of the musculoskeletal system and connective tissue (M00-M99) > 2024 ICD-10-CM Codes M05-M14 – Inflammatory polyarthropathies (M05-M14) > 2024 ICD-10-CM Codes M08 – Juvenile arthritis (M08) > 2024 ICD-10-CM Codes M08.2 – Juvenile rheumatoid arthritis with systemic onset (M08.2) > 2024 ICD-10-CM Codes M08.26 – Juvenile rheumatoid arthritis with systemic onset, knee (M08.26)