ICD-10-CM > M00-M99 > M20-M25 > M21 > M21.1 M21.1 Varus deformity, not elsewhere classified Non-Billable/Non-Specific Type 1 Excludes metatarsus varus (Q66.22-)tibia vara (M92.51-) Codes M21.10Varus deformity, not elsewhere classified, unspecified siteM21.12Varus deformity, not elsewhere classified, elbowM21.121Varus deformity, not elsewhere classified, right elbowM21.122Varus deformity, not elsewhere classified, left elbowM21.129Varus deformity, not elsewhere classified, unspecified elbowM21.15Varus deformity, not elsewhere classified, hipM21.151Varus deformity, not elsewhere classified, right hipM21.152Varus deformity, not elsewhere classified, left hipM21.159Varus deformity, not elsewhere classified, unspecified hipM21.16Varus deformity, not elsewhere classified, kneeM21.161Varus deformity, not elsewhere classified, right kneeM21.162Varus deformity, not elsewhere classified, left kneeM21.169Varus deformity, not elsewhere classified, unspecified kneeM21.17Varus deformity, not elsewhere classified, ankleM21.171Varus deformity, not elsewhere classified, right ankleM21.172Varus deformity, not elsewhere classified, left ankleM21.179Varus deformity, not elsewhere classified, unspecified ankle