ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.6 > M85.67 M85.67 Other cyst of bone, ankle and foot Non-Billable/Non-Specific Codes M85.671Other cyst of bone, right ankle and footM85.672Other cyst of bone, left ankle and footM85.679Other cyst of bone, unspecified ankle and foot