ICD-10-CM > M00-M99 > M20-M25 > M21 > M21.0 > M21.02 M21.02 Valgus deformity, not elsewhere classified, elbow Non-Billable/Non-Specific Applicable To Cubitus valgus Codes M21.021Valgus deformity, not elsewhere classified, right elbowM21.022Valgus deformity, not elsewhere classified, left elbowM21.029Valgus deformity, not elsewhere classified, unspecified elbow