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Q55.1

Hypoplasia of testis and scrotum

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 4 never code together
Q55code
Excludes1
  • congenital hydrocele (P83.5)P83.5
  • hypospadias (Q54.-)Q54.-
Q50-Q56block
Excludes1
  • androgen insensitivity syndrome (E34.5-)E34.5-
  • syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99)Q90-Q99

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Instructional notes 1
Q55.1code
Inclusion terms
  • Fusion of testes
Index entries leading here 4
  • Fusion, fused (congenital)
  • Malformation (congenital) — see also Anomaly
  • Hypoplasia, hypoplastic
  • Synorchidism, synorchism Q55.1
Alongside this code 9 same parent — Q55
Q55.0 Absence and aplasia of testis Q55.2 Oth and unsp congenital malformations of testis and scrotum category Q55.3 Atresia of vas deferens Q55.4 Oth congen malform of vas def,epidid, semnl vescl & prostate Q55.5 Congenital absence and aplasia of penis Q55.6 Other congenital malformations of penis category Q55.7 Congenital vasocutaneous fistula Q55.8 Oth congenital malformations of male genital organs Q55.9 Congenital malformation of male genital organ, unspecified
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

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This code

Billable
yes
Code set
FY2026
Parent
Q55
Block
Q50-Q56
Siblings
9

Present FY2024–FY2027.