ICD-10-CM > M00-M99 > M91-M94 > M93 > M93.9 > M93.97 M93.97 Osteochondropathy, unspecified of ankle and foot Non-Billable/Non-Specific Codes M93.971Osteochondropathy, unspecified, right ankle and footM93.972Osteochondropathy, unspecified, left ankle and footM93.979Osteochondropathy, unspecified, unspecified ankle and foot