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v1.0.0
ICD-10 Guide
ICD-10 CodesQ24.2

Q24.2

Billable

Cor triatriatum

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

Code Description

ICD-10 Q24.2 is a billable code used to indicate a diagnosis of cor triatriatum.

Key Diagnostic Point:

Cor triatriatum is a rare congenital heart defect characterized by the presence of a fibrous membrane that divides the left atrium into two chambers, creating a triatrial configuration. This condition can lead to obstruction of blood flow from the pulmonary veins to the left ventricle, resulting in pulmonary hypertension and heart failure if not diagnosed and treated early. Patients may present with symptoms such as difficulty breathing, cyanosis, and exercise intolerance. Diagnosis is typically made through echocardiography, which reveals the abnormal atrial structure and any associated defects. Surgical intervention is often required to remove the obstructive membrane and restore normal blood flow. The prognosis for patients with cor triatriatum varies depending on the presence of other congenital heart defects and the timing of surgical intervention. Early detection and management are crucial for improving outcomes in affected individuals.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of symptoms
  • Need for detailed anatomical descriptions in documentation
  • Potential for associated congenital heart defects
  • Variations in surgical approaches and outcomes

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings
  • Failure to capture associated congenital anomalies
  • Misclassification of the severity of the condition
  • Lack of clarity in surgical intervention details

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation must include growth parameters, developmental milestones, and specific symptoms related to cardiac function.

Common Clinical Scenarios

Common scenarios include infants presenting with respiratory distress or failure to thrive due to undiagnosed cor triatriatum.

Billing Considerations

Coders should be aware of the age-related variations in presentation and the importance of early intervention in pediatric patients.

Genetics

Documentation Requirements

Genetic documentation should include family history of congenital heart defects and any chromosomal abnormalities that may be associated.

Common Clinical Scenarios

Genetic counseling may be required for families with a history of congenital heart defects, including cor triatriatum.

Billing Considerations

Consideration of syndromic associations is crucial, as cor triatriatum may occur in conjunction with genetic syndromes.

Coding Guidelines

Inclusion Criteria

Use Q24.2 When
  • Coders should adhere to official ICD
  • 10 guidelines for congenital conditions, ensuring accurate documentation of the defect's anatomical features and any associated conditions
  • It is essential to capture the full clinical picture to support the diagnosis

Exclusion Criteria

Do NOT use Q24.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

33533CPT Code

Repair of cor triatriatum

Clinical Scenario

Used during surgical intervention for cor triatriatum to restore normal atrial anatomy.

Documentation Requirements

Operative report detailing the surgical approach and findings.

Specialty Considerations

Pediatric cardiology specialists should provide detailed operative notes.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital heart defects, including cor triatriatum, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital heart defects, including cor triatriatum, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    American Academy of Pediatrics - Congenital Heart Disease

Coding & Billing References

  • •
    American Academy of Pediatrics - Congenital Heart Disease

Frequently Asked Questions

What are the common symptoms of cor triatriatum?

Common symptoms include difficulty breathing, cyanosis, fatigue, and exercise intolerance. Symptoms may vary based on the severity of the obstruction and the presence of associated congenital defects.