All ICD10 Codes
Chapter 17

Q00–Q99: Congenital Malformations, Deformations and Chromosomal Abnormalities

Congenital Malformations, Deformations and Chromosomal Abnormalities diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • inborn errors of metabolism (E70-E88)
All CodesBillable Only
Internal Codes
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  • Q54.1—

    Hypospadias, penile

  • Q54.2—

    Hypospadias, penoscrotal

  • Q54.3—

    Hypospadias, perineal

  • Q54.4—

    Congenital chordee

  • Q54.8—

    Other hypospadias

  • Q54.9—

    Hypospadias, unspecified

  • Q55—

    Other congenital malformations of male genital organs

  • Q55.0—

    Absence and aplasia of testis

  • Q55.1—

    Hypoplasia of testis and scrotum

  • Q55.2—

    Other and unspecified congenital malformations of testis and scrotum

  • Q55.20—

    Unspecified congenital malformations of testis and scrotum

  • Q55.21—

    Polyorchism

  • Q55.22—

    Retractile testis

  • Q55.23—

    Scrotal transposition

  • Q55.29—

    Other congenital malformations of testis and scrotum

  • Q55.3—

    Atresia of vas deferens

  • Q55.4—

    Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate

  • Q55.5—

    Congenital absence and aplasia of penis

  • Q55.6—

    Other congenital malformations of penis

  • Q55.61—

    Curvature of penis (lateral)

  • Q55.62—

    Hypoplasia of penis

  • Q55.63—

    Congenital torsion of penis

  • Q55.64—

    Hidden penis

  • Q55.69—

    Other congenital malformation of penis

  • Q55.7—

    Congenital vasocutaneous fistula

  • Q55.8—

    Other specified congenital malformations of male genital organs

  • Q55.9—

    Congenital malformation of male genital organ, unspecified

  • Q56—

    Indeterminate sex and pseudohermaphroditism

  • Q56.0—

    Hermaphroditism, not elsewhere classified

  • Q56.1—

    Male pseudohermaphroditism, not elsewhere classified

  • Q56.2—

    Female pseudohermaphroditism, not elsewhere classified

  • Q56.3—

    Pseudohermaphroditism, unspecified

  • Q56.4—

    Indeterminate sex, unspecified

  • Q60—

    Renal agenesis and other reduction defects of kidney

  • Q60.0—

    Renal agenesis, unilateral

  • Q60.1—

    Renal agenesis, bilateral

  • Q60.2—

    Renal agenesis, unspecified

  • Q60.3—

    Renal hypoplasia, unilateral

  • Q60.4—

    Renal hypoplasia, bilateral

  • Q60.5—

    Renal hypoplasia, unspecified

  • Q60.6—

    Potter's syndrome

  • Q61—

    Cystic kidney disease

  • Q61.0—

    Congenital renal cyst

  • Q61.00—

    Congenital renal cyst, unspecified

  • Q61.01—

    Congenital single renal cyst

  • Q61.02—

    Congenital multiple renal cysts

  • Q61.1—

    Polycystic kidney, infantile type

  • Q61.11—

    Cystic dilatation of collecting ducts

  • Q61.19—

    Other polycystic kidney, infantile type

  • Q61.2—

    Polycystic kidney, adult type

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