Q50-Q56
Medium Complexity

Congenital malformations of genital organs

Primary Specialty: Obstetrics and Gynecology
Last Updated: 2025-09-10

ICD-10 Codes (102)

96 billable
0 category headers
Q51
Congenital malformations of uterus and cervix
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Q51.0
Billable
Agenesis and aplasia of uterus
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Q51.1
Billable
Doubling of uterus with doubling of cervix and vagina
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Q51.10
Billable
Doubling of uterus with doubling of cervix and vagina without obstruction
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Q51.11
Billable
Doubling of uterus with doubling of cervix and vagina with obstruction
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Q51.2
Billable
Other doubling of uterus
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Q51.21
Billable
Complete doubling of uterus
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Q51.22
Billable
Partial doubling of uterus
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Q51.28
Billable
Other and unspecified doubling of uterus
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Q51.3
Billable
Bicornate uterus
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Q51.4
Billable
Unicornate uterus
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Q51.5
Billable
Agenesis and aplasia of cervix
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Q51.6
Billable
Embryonic cyst of cervix
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Q51.7
Billable
Congenital fistulae between uterus and digestive and urinary tracts
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Q51.8
Billable
Other congenital malformations of uterus and cervix
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Q51.81
Billable
Other congenital malformations of uterus
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Q51.810
Billable
Arcuate uterus
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Q51.811
Billable
Hypoplasia of uterus
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Q51.818
Billable
Other congenital malformations of uterus
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Q51.82
Billable
Other congenital malformations of cervix
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Q51.820
Billable
Cervical duplication
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Q51.821
Billable
Hypoplasia of cervix
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Q51.828
Billable
Other congenital malformations of cervix
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Q51.9
Billable
Congenital malformation of uterus and cervix, unspecified
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Q52
Other congenital malformations of female genitalia
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Q52.0
Billable
Congenital absence of vagina
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Q52.1
Billable
Doubling of vagina
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Q52.10
Billable
Doubling of vagina, unspecified
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Q52.11
Billable
Transverse vaginal septum
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Q52.12
Billable
Longitudinal vaginal septum
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Q52.120
Billable
Longitudinal vaginal septum, nonobstructing
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Q52.121
Billable
Longitudinal vaginal septum, obstructing, right side
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Q52.122
Billable
Longitudinal vaginal septum, obstructing, left side
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Q52.123
Billable
Longitudinal vaginal septum, microperforate, right side
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Q52.124
Billable
Longitudinal vaginal septum, microperforate, left side
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Q52.129
Billable
Other and unspecified longitudinal vaginal septum
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Q52.2
Billable
Congenital rectovaginal fistula
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Q52.3
Billable
Imperforate hymen
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Q52.4
Billable
Other congenital malformations of vagina
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Q52.5
Billable
Fusion of labia
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Q52.6
Billable
Congenital malformation of clitoris
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Q52.7
Billable
Other and unspecified congenital malformations of vulva
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Q52.70
Billable
Unspecified congenital malformations of vulva
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Q52.71
Billable
Congenital absence of vulva
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Q52.79
Billable
Other congenital malformations of vulva
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Q52.8
Billable
Other specified congenital malformations of female genitalia
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Q52.9
Billable
Congenital malformation of female genitalia, unspecified
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Q53
Undescended and ectopic testicle
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Q53.0
Billable
Ectopic testis
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Q53.00
Billable
Ectopic testis, unspecified
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Q53.01
Billable
Ectopic testis, unilateral
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Q53.02
Billable
Ectopic testes, bilateral
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Q53.1
Billable
Undescended testicle, unilateral
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Q53.10
Billable
Unspecified undescended testicle, unilateral
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Q53.11
Billable
Abdominal testis, unilateral
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Q53.111
Billable
Unilateral intraabdominal testis
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Q53.112
Billable
Unilateral inguinal testis
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Q53.12
Billable
Ectopic perineal testis, unilateral
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Q53.13
Billable
Unilateral high scrotal testis
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Q53.2
Billable
Undescended testicle, bilateral
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Q53.20
Billable
Undescended testicle, unspecified, bilateral
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Q53.21
Billable
Abdominal testis, bilateral
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Q53.211
Billable
Bilateral intraabdominal testes
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Q53.212
Billable
Bilateral inguinal testes
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Q53.22
Billable
Ectopic perineal testis, bilateral
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Q53.23
Billable
Bilateral high scrotal testes
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Q53.9
Billable
Undescended testicle, unspecified
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Q54
Hypospadias
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Q54.0
Billable
Hypospadias, balanic
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Q54.1
Billable
Hypospadias, penile
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Q54.2
Billable
Hypospadias, penoscrotal
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Q54.3
Billable
Hypospadias, perineal
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Q54.4
Billable
Congenital chordee
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Q54.8
Billable
Other hypospadias
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Q54.9
Billable
Hypospadias, unspecified
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Q55
Other congenital malformations of male genital organs
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Q55.0
Billable
Absence and aplasia of testis
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Q55.1
Billable
Hypoplasia of testis and scrotum
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Q55.2
Billable
Other and unspecified congenital malformations of testis and scrotum
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Q55.20
Billable
Unspecified congenital malformations of testis and scrotum
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Q55.21
Billable
Polyorchism
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Q55.22
Billable
Retractile testis
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Q55.23
Billable
Scrotal transposition
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Q55.29
Billable
Other congenital malformations of testis and scrotum
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Q55.3
Billable
Atresia of vas deferens
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Q55.4
Billable
Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
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Q55.5
Billable
Congenital absence and aplasia of penis
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Q55.6
Billable
Other congenital malformations of penis
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Q55.61
Billable
Curvature of penis (lateral)
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Q55.62
Billable
Hypoplasia of penis
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Q55.63
Billable
Congenital torsion of penis
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Q55.64
Billable
Hidden penis
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Q55.69
Billable
Other congenital malformation of penis
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Q55.7
Billable
Congenital vasocutaneous fistula
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Q55.8
Billable
Other specified congenital malformations of male genital organs
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Q55.9
Billable
Congenital malformation of male genital organ, unspecified
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Q56
Indeterminate sex and pseudohermaphroditism
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Q56.0
Billable
Hermaphroditism, not elsewhere classified
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Q56.1
Billable
Male pseudohermaphroditism, not elsewhere classified
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Q56.2
Billable
Female pseudohermaphroditism, not elsewhere classified
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Q56.3
Billable
Pseudohermaphroditism, unspecified
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Q56.4
Billable
Indeterminate sex, unspecified
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Updates & Changes

FY 2026 Updates

Current Year

New Codes (1)

Q23.4
Hypoplastic left heart syndrome with mitral atresia

Revised Codes (1)

Q21.0
Ventricular septal defect - updated to include hemodynamic significance when known

Deleted Codes

No codes deleted in this range for FY 2026

Historical Changes

  • •FY 2025: Routine maintenance updates with minor terminology clarifications
  • •FY 2024: Enhanced specificity requirements for certain code ranges
  • •FY 2023: Updated documentation guidelines for improved clarity

Upcoming Changes

  • •Proposed updates pending review by Coordination and Maintenance Committee
  • •Under consideration: Enhanced digital health integration codes

Implementation Guidance

  • •Review all FY 2026 updates for Q50-Q56 codes before implementation
  • •Always verify the most current codes in the ICD-10-CM manual
  • •Ensure clinical documentation supports the selected diagnosis codes
  • +3 more guidance items...

Range Overview

high priority

The ICD-10 code range Q50-Q56 represents congenital malformations of genital organs. These codes are used to document various types of congenital abnormalities, both male and female, that are present at birth. The range includes specific codes for conditions such as undescended testicle (Q53), congenital absence of uterus and cervix (Q51), and other malformations of the genital organs. These codes are crucial for accurate medical documentation and statistical tracking of these congenital conditions.

Key Usage Points:

  • •Always use specific codes that identify the exact type of congenital malformation.
  • •When coding for undescended testicle, specify the side (left, right, bilateral).
  • •For conditions like congenital absence of uterus, use additional codes to identify any associated endocrine disorder.
  • •In case of multiple malformations, each should be coded separately.
  • •When coding for intersex disorders, use additional codes to specify any associated sexual dysfunction.

Coding Guidelines

When to Use:

  • ✓When a patient presents with a congenital malformation of the genital organs.
  • ✓If a patient has a history of a congenital genital malformation that impacts their current health status.
  • ✓When a patient undergoes surgery for correction of a congenital genital malformation.
  • ✓If a patient has a congenital genital malformation and an associated endocrine disorder.
  • ✓When a patient presents with an intersex disorder due to a congenital malformation.

When NOT to Use:

  • ✗When a patient has an acquired malformation of the genital organs.
  • ✗If the patient's condition is due to a disease or injury, not a congenital malformation.
  • ✗When the patient's congenital malformation has been corrected and no longer impacts their health.
  • ✗If the patient has a genital malformation, but it is not congenital.
  • ✗When the patient's condition is not specified as congenital.

Code Exclusions

Always verify exclusions with the latest version of the ICD-10 coding manual.

Documentation Requirements

Proper documentation for congenital malformations of genital organs should clearly specify the type of malformation, its location, and any associated conditions. It should also include information on how the condition impacts the patient's health and any treatment provided.

Clinical Information:

  • •Specific type of congenital malformation
  • •Location of the malformation
  • •Associated conditions or complications
  • •Impact on patient's health
  • •Treatment provided or planned

Supporting Evidence:

  • •Medical history
  • •Physical examination findings
  • •Imaging studies
  • •Surgical reports
Good Documentation Example:

Patient with congenital absence of uterus and associated endocrine disorder. Condition impacts fertility. Hormone replacement therapy planned.

Poor Documentation Example:

Patient with genital malformation.

Common Documentation Errors:

  • âš Not specifying the type of malformation
  • âš Failing to code for associated conditions
  • âš Not indicating how the condition impacts the patient's health
  • âš Not documenting treatment provided or planned

Range Statistics

7
Total Codes
96
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:17

Coding Complexity

Medium
Complexity Rating

Coding for congenital malformations of genital organs is of medium complexity due to the need to accurately identify the specific type of malformation and any associated conditions. It also requires an understanding of how the condition impacts the patient's health and keeping up-to-date with changes in coding guidelines.

Key Factors:
  • â–¸Identifying the specific type of malformation
  • â–¸Coding for associated conditions
  • â–¸Understanding the impact on patient's health
  • â–¸Keeping up-to-date with changes in coding guidelines

Specialty Focus

These codes are most commonly used in specialties dealing with reproductive health and endocrinology. They are also relevant in pediatric care, especially in cases of intersex disorders.

Primary Specialties:
Obstetrics and Gynecology
40%
Urology
30%
Pediatrics
20%
Endocrinology
10%
Clinical Scenarios:
  • • A newborn diagnosed with undescended testicle
  • • A woman with congenital absence of uterus seeking fertility treatment
  • • A child with an intersex disorder due to a congenital malformation
  • • A patient undergoing surgery for correction of a congenital genital malformation
  • • A patient with a history of congenital genital malformation that impacts their current health status

Resources & References

Numerous resources are available for coders working with ICD-10 codes for congenital malformations of genital organs. These include the official ICD-10 coding manual, clinical reference materials, and educational resources.

Official Guidelines:

  • ICD-10-CM Official Guidelines for Coding and Reporting
  • World Health Organization's ICD-10 online version
  • National Center for Health Statistics ICD-10-CM webpage
  • American Health Information Management Association's ICD-10 resources

Clinical References:

  • UpToDate
  • Medscape
  • PubMed

Educational Materials:

  • American Academy of Professional Coders' ICD-10 training
  • American Health Information Management Association's ICD-10 training
  • Medical Coding Academy's ICD-10 courses

Frequently Asked Questions

Can I use a code from this range for an acquired malformation of the genital organs?

No, the codes in this range are specifically for congenital malformations. Acquired malformations should be coded elsewhere.