ICD-10-CM > Q00-QA0 > Q65-Q79 > Q66 > Q66.4 Q66.4 Congenital talipes calcaneovalgus Non-Billable/Non-Specific Codes Q66.40Congenital talipes calcaneovalgus, unspecified footQ66.41Congenital talipes calcaneovalgus, right footQ66.42Congenital talipes calcaneovalgus, left foot