| Q42 | Congenital absence, atresia and stenosis of large intestine | NON-BILLABLE CODE |
| Q42.0 | Congenital absence, atresia and stenosis of rectum with fistula | BILLABLE CODE |
| Q42.1 | Congenital absence, atresia and stenosis of rectum without fistula | BILLABLE CODE |
| Q42.3 | Congenital absence, atresia and stenosis of anus without fistula | BILLABLE CODE |
| Q42.8 | Congenital absence, atresia and stenosis of other parts of large intestine | BILLABLE CODE |
| Q42.9 | Congenital absence, atresia and stenosis of large intestine, part unspecified | BILLABLE CODE |
