| Q53 | Undescended and ectopic testicle | NON-BILLABLE CODE |
| Q53.0 | Ectopic testis | NON-BILLABLE CODE |
| Q53.00 | Ectopic testis, unspecified | BILLABLE CODE |
| Q53.01 | Ectopic testis, unilateral | BILLABLE CODE |
| Q53.02 | Ectopic testes, bilateral | BILLABLE CODE |
| Q53.1 | Undescended testicle, unilateral | NON-BILLABLE CODE |
| Q53.10 | Unspecified undescended testicle, unilateral | BILLABLE CODE |
| Q53.11 | Abdominal testis, unilateral | NON-BILLABLE CODE |
| Q53.111 | Unilateral intraabdominal testis | BILLABLE CODE |
| Q53.112 | Unilateral inguinal testis | BILLABLE CODE |
| Q53.12 | Ectopic perineal testis, unilateral | BILLABLE CODE |
| Q53.2 | Undescended testicle, bilateral | NON-BILLABLE CODE |
| Q53.20 | Undescended testicle, unspecified, bilateral | BILLABLE CODE |
| Q53.21 | Abdominal testis, bilateral | NON-BILLABLE CODE |
| Q53.211 | Bilateral intraabdominal testes | BILLABLE CODE |
| Q53.212 | Bilateral inguinal testes | BILLABLE CODE |
| Q53.22 | Ectopic perineal testis, bilateral | BILLABLE CODE |
| Q53.23 | Bilateral high scrotal testes | BILLABLE CODE |
| Q53.9 | Undescended testicle, unspecified | BILLABLE CODE |
