ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.3 > M85.37 M85.37 Osteitis condensans, ankle and foot Non-Billable/Non-Specific Codes M85.371Osteitis condensans, right ankle and footM85.372Osteitis condensans, left ankle and footM85.379Osteitis condensans, unspecified ankle and foot