ICD-10-CM > M00-M99 > M20-M25 > M21 > M21.9 M21.9 Unspecified acquired deformity of limb and hand Non-Billable/Non-Specific Codes M21.90Unspecified acquired deformity of unspecified limbM21.92Unspecified acquired deformity of upper armM21.921Unspecified acquired deformity of right upper armM21.922Unspecified acquired deformity of left upper armM21.929Unspecified acquired deformity of unspecified upper armM21.93Unspecified acquired deformity of forearmM21.931Unspecified acquired deformity of right forearmM21.932Unspecified acquired deformity of left forearmM21.939Unspecified acquired deformity of unspecified forearmM21.94Unspecified acquired deformity of handM21.941Unspecified acquired deformity of hand, right handM21.942Unspecified acquired deformity of hand, left handM21.949Unspecified acquired deformity of hand, unspecified handM21.95Unspecified acquired deformity of thighM21.951Unspecified acquired deformity of right thighM21.952Unspecified acquired deformity of left thighM21.959Unspecified acquired deformity of unspecified thighM21.96Unspecified acquired deformity of lower legM21.961Unspecified acquired deformity of right lower legM21.962Unspecified acquired deformity of left lower legM21.969Unspecified acquired deformity of unspecified lower leg