ICD-10-CM > M00-M99 > M91-M94 > M94 > M94.2 > M94.21 M94.21 Chondromalacia, shoulder Non-Billable/Non-Specific Codes M94.211Chondromalacia, right shoulderM94.212Chondromalacia, left shoulderM94.219Chondromalacia, unspecified shoulder