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ICD-10 Guide
ICD-10 CodesI25.4

I25.4

Non-billable

Coronary artery aneurysm and dissection

BILLABLE STATUSNo
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 I25.4 is a used to indicate a diagnosis of coronary artery aneurysm and dissection.

Key Diagnostic Point:

Coronary artery aneurysm and dissection are serious cardiovascular conditions characterized by abnormal dilation or tearing of the coronary arteries. Clinically, patients may present with chest pain, shortness of breath, or even myocardial infarction due to compromised blood flow. The anatomy involved includes the coronary arteries, which supply blood to the heart muscle. Disease progression can lead to significant complications, including thrombosis, rupture, and ischemia. Diagnostic considerations often involve imaging techniques such as coronary angiography, CT angiography, or MRI to visualize the aneurysm or dissection. Early detection is crucial to prevent severe outcomes, and management may include medical therapy, surgical intervention, or endovascular procedures depending on the severity and location of the aneurysm or dissection.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires advanced imaging and clinical correlation.
  • Treatment complexity: May involve multidisciplinary approaches including cardiology and surgery.
  • Documentation requirements: Detailed clinical notes and imaging reports are essential.
  • Coding specificity: Requires precise coding to differentiate from other coronary conditions.

Audit Risk Factors

  • Common coding errors: Misclassification with other coronary artery diseases.
  • Documentation gaps: Incomplete imaging reports or clinical notes.
  • Billing challenges: Denials may arise from insufficient documentation of the condition's severity.

Specialty Focus

Medical Specialties

Primary medical specialty: Cardiology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Secondary specialty: Cardiothoracic Surgery

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Coronary artery aneurysms and dissections have significant clinical implications, potentially leading to acute coronary syndromes and increased morbidity. Understanding the epidemiology of these conditions is crucial for population health management, as they may be associated with underlying genetic or acquired disorders. Quality measures should focus on early detection and appropriate management to reduce healthcare utilization and improve patient outcomes.

ICD-9 vs ICD-10

Coronary artery aneurysms and dissections have significant clinical implications, potentially leading to acute coronary syndromes and increased morbidity. Understanding the epidemiology of these conditions is crucial for population health management, as they may be associated with underlying genetic or acquired disorders. Quality measures should focus on early detection and appropriate management to reduce healthcare utilization and improve patient outcomes.

Reimbursement & Billing Impact

Reimbursement may vary based on the complexity of the case and the interventions performed. Common denials can occur if documentation does not clearly support the diagnosis or if the procedure codes do not align with the diagnosis. Best practices include ensuring that all clinical notes are complete and that the coding accurately reflects the patient's condition and treatment plan.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by I25.4?

I25.4 covers coronary artery aneurysms and dissections, which may arise from various etiologies including atherosclerosis, connective tissue disorders, or trauma. It is important to differentiate these from other coronary artery diseases.

When should I25.4 be used instead of related codes?

I25.4 should be used when there is a confirmed diagnosis of a coronary artery aneurysm or dissection, particularly when imaging studies support the diagnosis. It is crucial to differentiate it from stable angina or other forms of coronary artery disease.

What documentation supports I25.4?

Documentation should include detailed clinical evaluations, imaging results that confirm the presence of an aneurysm or dissection, and any relevant laboratory findings. Clear notes on the patient's symptoms and treatment plan are also necessary.