| Q66.21 | Congenital metatarsus primus varus | NON-BILLABLE CODE |
| Q66.211 | Congenital metatarsus primus varus, right foot | BILLABLE CODE |
| Q66.212 | Congenital metatarsus primus varus, left foot | BILLABLE CODE |
| Q66.219 | Congenital metatarsus primus varus, unspecified foot | BILLABLE CODE |
| Q66.22 | Congenital metatarsus adductus | NON-BILLABLE CODE |
| Q66.221 | Congenital metatarsus adductus, right foot | BILLABLE CODE |
| Q66.222 | Congenital metatarsus adductus, left foot | BILLABLE CODE |
| Q66.229 | Congenital metatarsus adductus, unspecified foot | BILLABLE CODE |
