LB52.1

ICD-11 MMS 2026-01

Undescended testicle, unilateral

Description

The situation in which one of the two testicles in a male has not transitioned from the abdomen, and therefore appears absent from the scrotum.

Index terms

  • Undescended testicle, unilateral
  • ectopic testis, unilateral
  • nondescent unilateral testicle
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  • undescendent testis, unilateral
  • unilateral cryptorchidism
  • unilateral cryptorchism
  • unilateral undescended testis
  • Undescended testicle, unilateral, canalicular
  • Undescended testicle, unilateral, inguinal
  • unilateral inguinal testicle
  • Undescended testicle, unilateral, intra-abdominal
  • Unilateral maldescent of testis
  • maldescent unilateral testicle
  • unilateral imperfectly descended testis
  • unilateral incomplete descended testis

Exclusions from above levels

  • MF42 – Retractile testis migrans
  • LD2A – Disorders of sex development leading to sexual ambiguity
  • http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

  • LB52.0 – Ectopic testis
  • LB52.2 – Undescended testicle, bilateral
  • LB52.Y – Other specified cryptorchidism
  • LB52.Z – Cryptorchidism, unspecified

Foundation entity

Undescended testicle, unilateral – http://id.who.int/icd/entity/2041788595

Allowed postcoordination axes

Part of: LB52: Cryptorchidism › 20: Developmental anomalies