ICD-10-CM > M00-M99 > M20-M25 > M21 > M21.2 M21.2 Flexion deformity Non-Billable/Non-Specific Codes M21.20Flexion deformity, unspecified siteM21.21Flexion deformity, shoulderM21.211Flexion deformity, right shoulderM21.212Flexion deformity, left shoulderM21.219Flexion deformity, unspecified shoulderM21.22Flexion deformity, elbowM21.221Flexion deformity, right elbowM21.222Flexion deformity, left elbowM21.229Flexion deformity, unspecified elbowM21.23Flexion deformity, wristM21.231Flexion deformity, right wristM21.232Flexion deformity, left wristM21.239Flexion deformity, unspecified wristM21.24Flexion deformity, finger jointsM21.241Flexion deformity, right finger jointsM21.242Flexion deformity, left finger jointsM21.249Flexion deformity, unspecified finger jointsM21.25Flexion deformity, hipM21.251Flexion deformity, right hipM21.252Flexion deformity, left hipM21.259Flexion deformity, unspecified hipM21.26Flexion deformity, kneeM21.261Flexion deformity, right kneeM21.262Flexion deformity, left kneeM21.269Flexion deformity, unspecified kneeM21.27Flexion deformity, ankle and toesM21.271Flexion deformity, right ankle and toesM21.272Flexion deformity, left ankle and toesM21.279Flexion deformity, unspecified ankle and toes