ICD-10-CM > Q00-QA0 > Q50-Q56 > Q53 > Q53.1 Q53.1 Undescended testicle, unilateral Non-Billable/Non-Specific Codes Q53.10Unspecified undescended testicle, unilateralQ53.11Abdominal testis, unilateralQ53.111Unilateral intraabdominal testisQ53.112Unilateral inguinal testisQ53.12Ectopic perineal testis, unilateralQ53.13Unilateral high scrotal testis