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v1.0.0
ICD-10 Guide
ICD-10 CodesQ51.4

Q51.4

Billable

Unicornate uterus

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 Q51.4 is a billable code used to indicate a diagnosis of unicornate uterus.

Key Diagnostic Point:

A unicornate uterus is a congenital malformation of the female reproductive system characterized by the presence of a single horn or uterine cavity, resulting from incomplete development of the Müllerian ducts during embryogenesis. This condition can lead to various reproductive complications, including infertility, ectopic pregnancy, and obstetric complications such as preterm labor and malpresentation. The unicornate uterus may be associated with renal anomalies, such as renal agenesis or ectopic kidney, due to the close embryological relationship between the development of the kidneys and the uterus. Diagnosis is typically made through imaging studies such as ultrasound or MRI, which can reveal the asymmetrical shape of the uterus. Management of patients with a unicornate uterus often involves careful monitoring during pregnancy and may require surgical intervention in cases of associated complications or severe symptoms.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and associated anomalies
  • Need for imaging studies for accurate diagnosis
  • Potential for complications during pregnancy
  • Differentiation from other uterine malformations

Audit Risk Factors

  • Inadequate documentation of associated anomalies
  • Failure to specify the type of uterine malformation
  • Incorrect coding of complications during pregnancy
  • Misidentification of the condition as a different uterine anomaly

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Documentation should include detailed descriptions of the patient's history, physical examination findings, and any imaging studies performed. It is essential to note any associated congenital anomalies.

Common Clinical Scenarios

Common scenarios include evaluation of a newborn with ambiguous genitalia or a child presenting with recurrent urinary tract infections, which may prompt investigation for underlying congenital anomalies.

Billing Considerations

Pediatric coders should be aware of the implications of congenital conditions on growth and development, as well as the potential need for multidisciplinary care.

Genetics

Documentation Requirements

Genetic documentation should include family history, genetic testing results, and any syndromic associations with the unicornate uterus.

Common Clinical Scenarios

Genetic counseling may be required for families with a history of congenital malformations, particularly if there are multiple affected family members.

Billing Considerations

Genetic coders must ensure accurate coding of chromosomal abnormalities that may co-occur with congenital malformations.

Coding Guidelines

Inclusion Criteria

Use Q51.4 When
  • According to ICD
  • 10 coding guidelines, congenital malformations should be coded based on the specific anatomical and functional abnormalities present
  • Documentation must support the diagnosis and any associated conditions

Exclusion Criteria

Do NOT use Q51.4 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

58150CPT Code

Hysterectomy, abdominal, total

Clinical Scenario

May be performed in cases of severe complications related to unicornate uterus.

Documentation Requirements

Indicate the reason for surgery and any associated conditions.

Specialty Considerations

Obstetricians should document the specific indications for surgery.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital malformations, including unicornate uterus, which enhances the ability to capture associated conditions and complications accurately.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital malformations, including unicornate uterus, which enhances the ability to capture associated conditions and complications accurately.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What are the common complications associated with a unicornate uterus?

Common complications include infertility, ectopic pregnancy, preterm labor, and malpresentation during delivery. Patients may also have associated renal anomalies, which require careful monitoring.