ICD-10-CM > M00-M99 > M91-M94 > M94 > M94.2 > M94.27 M94.27 Chondromalacia, ankle and joints of foot Non-Billable/Non-Specific Codes M94.271Chondromalacia, right ankle and joints of right footM94.272Chondromalacia, left ankle and joints of left footM94.279Chondromalacia, unspecified ankle and joints of foot