ICD-10-CM > M00-M99 > M60-M63 > M60 > M60.8 > M60.87 M60.87 Other myositis, ankle and foot Non-Billable/Non-Specific Codes M60.871Other myositis, right ankle and footM60.872Other myositis, left ankle and footM60.879Other myositis, unspecified ankle and foot