ICD-10-CM > Q00-QA0 > Q65-Q79 > Q66 > Q66.3 Q66.3 Other congenital varus deformities of feet Non-Billable/Non-Specific Applicable To Hallux varus, congenital Codes Q66.30Other congenital varus deformities of feet, unspecified footQ66.31Other congenital varus deformities of feet, right footQ66.32Other congenital varus deformities of feet, left foot