ICD-10-CM > Q00-QA0 > Q65-Q79 > Q66 > Q66.7 Q66.7 Congenital pes cavus Non-Billable/Non-Specific Codes Q66.70Congenital pes cavus, unspecified footQ66.71Congenital pes cavus, right footQ66.72Congenital pes cavus, left foot