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 M60-M63 – Disorders of muscles (M60-M63) > 2024 ICD-10-CM Codes M60 – Myositis > 2024 ICD-10-CM Codes M60.1 – Interstitial myositis (M60.1) > 2024 ICD-10-CM Codes M60.16 – Interstitial myositis, lower leg (M60.16)