ICD-10-CM Book 2026 Edition

Chapters  /  Chapter 17  /  Q50-Q56

Congenital malformations of genital organs (Q50-Q56)

Excludes1: androgen insensitivity syndrome (E34.5-)
syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99)
Q50 Congenital malformations of ovaries, fallopian tubes and broad ligaments
Q50.0 Congenital absence of ovary
Excludes1 Turner's syndrome (Q96.-)
Q50.01 Congenital absence of ovary, unilateral
sex Female
Q50.02 Congenital absence of ovary, bilateral
sex Female
Q50.1 Developmental ovarian cyst
sex Female
Q50.2 Congenital torsion of ovary
sex Female
Q50.3 Other congenital malformations of ovary
Q50.31 Accessory ovary
sex Female
Q50.32 Ovarian streak
46, XX with streak gonads
sex Female
Q50.39 Other congenital malformation of ovary
Congenital malformation of ovary NOS
sex Female
Q50.4 Embryonic cyst of fallopian tube
Fimbrial cyst
sex Female
Q50.5 Embryonic cyst of broad ligament
Epoophoron cyst
Parovarian cyst
sex Female
Q50.6 Other congenital malformations of fallopian tube and broad ligament
Absence of fallopian tube and broad ligament
Accessory fallopian tube and broad ligament
Atresia of fallopian tube and broad ligament
Congenital malformation of fallopian tube or broad ligament NOS
sex Female
Q51 Congenital malformations of uterus and cervix
Q51.0 Agenesis and aplasia of uterus
Congenital absence of uterus
sex Female
Q51.1 Doubling of uterus with doubling of cervix and vagina
Q51.10 Doubling of uterus with doubling of cervix and vagina without obstruction
Doubling of uterus with doubling of cervix and vagina NOS
sex Female
Q51.11 Doubling of uterus with doubling of cervix and vagina with obstruction
sex Female
Q51.2 Other doubling of uterus
Doubling of uterus NOS
Septate uterus
Q51.21 Complete doubling of uterus
Complete septate uterus
sex Female
Q51.22 Partial doubling of uterus
Partial septate uterus
sex Female
Q51.28 Other and unspecified doubling of uterus
Septate uterus NOS
sex Female
Q51.3 Bicornate uterus
Bicornate uterus, complete or partial
sex Female
Q51.4 Unicornate uterus
Unicornate uterus with or without a separate uterine horn
Uterus with only one functioning horn
sex Female
Q51.5 Agenesis and aplasia of cervix
Congenital absence of cervix
sex Female
Q51.6 Embryonic cyst of cervix
sex Female
Q51.7 Congenital fistulae between uterus and digestive and urinary tracts
sex Female
Q51.8 Other congenital malformations of uterus and cervix
Q51.81 Other congenital malformations of uterus
Q51.810 Arcuate uterus
Arcuatus uterus
sex Female
Q51.811 Hypoplasia of uterus
sex Female
Q51.818 Other congenital malformations of uterus
Müllerian anomaly of uterus NEC
sex Female
Q51.82 Other congenital malformations of cervix
Q51.820 Cervical duplication
sex Female
Q51.821 Hypoplasia of cervix
sex Female
Q51.828 Other congenital malformations of cervix
sex Female
Q51.9 Congenital malformation of uterus and cervix, unspecified
sex Female
Q52 Other congenital malformations of female genitalia
Q52.0 Congenital absence of vagina
Vaginal agenesis, total or partial
sex Female
Q52.1 Doubling of vagina
Excludes1 doubling of vagina with doubling of uterus and cervix (Q51.1-)
Q52.10 Doubling of vagina, unspecified
Septate vagina NOS
sex Female
Q52.11 Transverse vaginal septum
sex Female
Q52.12 Longitudinal vaginal septum
Q52.120 Longitudinal vaginal septum, nonobstructing
sex Female
Q52.121 Longitudinal vaginal septum, obstructing, right side
sex Female
Q52.122 Longitudinal vaginal septum, obstructing, left side
sex Female
Q52.123 Longitudinal vaginal septum, microperforate, right side
sex Female
Q52.124 Longitudinal vaginal septum, microperforate, left side
sex Female
Q52.129 Other and unspecified longitudinal vaginal septum
sex Female
Q52.2 Congenital rectovaginal fistula
Excludes1 cloaca (Q43.7)
sex Female
Q52.3 Imperforate hymen
sex Female
Q52.4 Other congenital malformations of vagina
Canal of Nuck cyst, congenital
Congenital malformation of vagina NOS
Embryonic vaginal cyst
Gartner's duct cyst
sex Female
Q52.5 Fusion of labia
sex Female
Q52.6 Congenital malformation of clitoris
sex Female
Q52.7 Other and unspecified congenital malformations of vulva
Q52.70 Unspecified congenital malformations of vulva
Congenital malformation of vulva NOS
sex Female
Q52.71 Congenital absence of vulva
sex Female
Q52.79 Other congenital malformations of vulva
Congenital cyst of vulva
sex Female
Q52.8 Other specified congenital malformations of female genitalia
sex Female
Q52.9 Congenital malformation of female genitalia, unspecified
sex Female
Q53 Undescended and ectopic testicle
Q53.0 Ectopic testis
Q53.00 Ectopic testis, unspecified
sex Male
Q53.01 Ectopic testis, unilateral
sex Male
Q53.02 Ectopic testes, bilateral
sex Male
Q53.1 Undescended testicle, unilateral
Q53.10 Unspecified undescended testicle, unilateral
sex Male
Q53.11 Abdominal testis, unilateral
Q53.111 Unilateral intraabdominal testis
sex Male
Q53.112 Unilateral inguinal testis
sex Male
Q53.12 Ectopic perineal testis, unilateral
sex Male
Q53.13 Unilateral high scrotal testis
sex Male
Q53.2 Undescended testicle, bilateral
Q53.20 Undescended testicle, unspecified, bilateral
sex Male
Q53.21 Abdominal testis, bilateral
Q53.211 Bilateral intraabdominal testes
sex Male
Q53.212 Bilateral inguinal testes
sex Male
Q53.22 Ectopic perineal testis, bilateral
sex Male
Q53.23 Bilateral high scrotal testes
sex Male
Q53.9 Undescended testicle, unspecified
Cryptorchism NOS
sex Male
Q54 Hypospadias
Excludes1 epispadias (Q64.0)
Q54.0 Hypospadias, balanic
Hypospadias, coronal
Hypospadias, glandular
sex Male
Q54.1 Hypospadias, penile
sex Male
Q54.2 Hypospadias, penoscrotal
sex Male
Q54.3 Hypospadias, perineal
sex Male
Q54.4 Congenital chordee
Chordee without hypospadias
sex Male
Q54.8 Other hypospadias
Hypospadias with intersex state
sex Male
Q54.9 Hypospadias, unspecified
sex Male
Q55 Other congenital malformations of male genital organs
Excludes1 congenital hydrocele (P83.5)
hypospadias (Q54.-)
Q55.0 Absence and aplasia of testis
Monorchism
sex Male
Q55.1 Hypoplasia of testis and scrotum
Fusion of testes
sex Male
Q55.2 Other and unspecified congenital malformations of testis and scrotum
Q55.20 Unspecified congenital malformations of testis and scrotum
Congenital malformation of testis or scrotum NOS
sex Male
Q55.21 Polyorchism
sex Male
Q55.22 Retractile testis
sex Male
Q55.23 Scrotal transposition
sex Male
Q55.29 Other congenital malformations of testis and scrotum
sex Male
Q55.3 Atresia of vas deferens
CodeFirst any associated cystic fibrosis (E84.-)
sex Male
Q55.4 Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
Absence or aplasia of prostate
Absence or aplasia of spermatic cord
Congenital malformation of vas deferens, epididymis, seminal vesicles or prostate NOS
sex Male
Q55.5 Congenital absence and aplasia of penis
sex Male
Q55.6 Other congenital malformations of penis
Q55.61 Curvature of penis (lateral)
sex Male
Q55.62 Hypoplasia of penis
Micropenis
sex Male
Q55.63 Congenital torsion of penis
Excludes1 acquired torsion of penis (N48.82)
sex Male
Q55.64 Hidden penis
Buried penis
Concealed penis
Excludes1 acquired buried penis (N48.83)
sex Male
Q55.69 Other congenital malformation of penis
Congenital malformation of penis NOS
sex Male
Q55.7 Congenital vasocutaneous fistula
sex Male
Q55.8 Other specified congenital malformations of male genital organs
sex Male
Q55.9 Congenital malformation of male genital organ, unspecified
Congenital anomaly of male genital organ
Congenital deformity of male genital organ
sex Male
Q56 Indeterminate sex and pseudohermaphroditism
Excludes1 46,XX true hermaphrodite (Q99.1)
androgen insensitivity syndrome (E34.5-)
chimera 46,XX/46,XY true hermaphrodite (Q99.0)
female pseudohermaphroditism with adrenocortical disorder (E25.-)
pseudohermaphroditism with specified chromosomal anomaly (Q96-Q99)
pure gonadal dysgenesis (Q99.1)
Q56.0 Hermaphroditism, not elsewhere classified
Ovotestis
Q56.1 Male pseudohermaphroditism, not elsewhere classified
46, XY with streak gonads
Male pseudohermaphroditism NOS
sex Male
Q56.2 Female pseudohermaphroditism, not elsewhere classified
Female pseudohermaphroditism NOS
sex Female
Q56.3 Pseudohermaphroditism, unspecified
Q56.4 Indeterminate sex, unspecified
Ambiguous genitalia