ICD-10-CM>Q00-QA1>Q65-Q79>Q66>Q66.9Q66.9Congenital deformity of feet, unspecifiedNon-Billable/Non-SpecificCodesQ66.90Congenital deformity of feet, unspecified, unspecified footQ66.91Congenital deformity of feet, unspecified, right footQ66.92Congenital deformity of feet, unspecified, left foot