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v1.0.0
ICD-10 Guide
ICD-10 CodesQ04.2

Q04.2

Billable

Holoprosencephaly

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

Code Description

ICD-10 Q04.2 is a billable code used to indicate a diagnosis of holoprosencephaly.

Key Diagnostic Point:

Holoprosencephaly is a congenital malformation of the brain characterized by the incomplete separation of the forebrain (prosencephalon) into two hemispheres. This condition can result in a range of neurological deficits and physical anomalies, including facial deformities such as cyclopia or a single central incisor. The severity of holoprosencephaly varies widely, with some infants exhibiting mild symptoms while others may have severe developmental delays or life-threatening complications. It is often associated with chromosomal abnormalities, particularly trisomy 13, and can occur in isolation or as part of syndromic conditions. Diagnosis is typically made through imaging studies such as ultrasound or MRI, and management may involve a multidisciplinary approach including neurology, genetics, and palliative care. Early intervention is crucial for optimizing developmental outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and severity
  • Association with other congenital anomalies
  • Need for genetic testing and counseling
  • Potential for multiple coding scenarios based on associated conditions

Audit Risk Factors

  • Inadequate documentation of associated anomalies
  • Failure to capture genetic testing results
  • Misclassification of severity or type of holoprosencephaly
  • Lack of clarity in multidisciplinary care notes

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed clinical notes on developmental milestones, physical examination findings, and imaging results.

Common Clinical Scenarios

Infants presenting with developmental delays, facial anomalies, or seizures.

Billing Considerations

Ensure accurate coding of associated conditions and developmental assessments.

Genetics

Documentation Requirements

Genetic testing results, family history, and counseling notes.

Common Clinical Scenarios

Families seeking genetic counseling after a diagnosis of holoprosencephaly.

Billing Considerations

Documenting chromosomal abnormalities and syndromic associations is critical for accurate coding.

Coding Guidelines

Inclusion Criteria

Use Q04.2 When
  • Follow ICD
  • CM guidelines for coding congenital malformations, ensuring specificity in documentation and coding of associated conditions
  • Utilize additional codes for any related anomalies or syndromic conditions

Exclusion Criteria

Do NOT use Q04.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

76801CPT Code

Ultrasound, brain, infant

Clinical Scenario

Used for initial assessment of holoprosencephaly in neonates.

Documentation Requirements

Detailed ultrasound findings and clinical correlation.

Specialty Considerations

Pediatric radiology notes should clearly document findings related to holoprosencephaly.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of holoprosencephaly, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of associated conditions and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of holoprosencephaly, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of associated conditions and outcomes.

Reimbursement & Billing Impact

reimbursement processes. It has also facilitated better tracking of associated conditions and outcomes.

Resources

Clinical References

  • •
    CDC - Congenital Malformations

Coding & Billing References

  • •
    CDC - Congenital Malformations

Frequently Asked Questions

What is the significance of coding holoprosencephaly accurately?

Accurate coding of holoprosencephaly is crucial for appropriate patient management, resource allocation, and understanding the epidemiology of congenital malformations. It also impacts reimbursement and the ability to track outcomes for affected individuals.