ICD-10-CM > M00-M99 > M91-M94 > M93 > M93.8 > M93.87 M93.87 Other specified osteochondropathies of ankle and foot Non-Billable/Non-Specific Codes M93.871Other specified osteochondropathies, right ankle and footM93.872Other specified osteochondropathies, left ankle and footM93.879Other specified osteochondropathies, unspecified ankle and foot