ICD-10-CM > M00-M99 > M70-M79 > M71 > M71.3 > M71.37 M71.37 Other bursal cyst, ankle and foot Non-Billable/Non-Specific Codes M71.371Other bursal cyst, right ankle and footM71.372Other bursal cyst, left ankle and footM71.379Other bursal cyst, unspecified ankle and foot