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ICD-10 Guide
ICD-10 CodesI24.0

I24.0

Billable

Acute coronary thrombosis not resulting in myocardial infarction

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

Code Description

ICD-10 I24.0 is a billable code used to indicate a diagnosis of acute coronary thrombosis not resulting in myocardial infarction.

Key Diagnostic Point:

Acute coronary thrombosis not resulting in myocardial infarction (MI) refers to the formation of a blood clot within a coronary artery that leads to a temporary obstruction of blood flow to the heart muscle without causing permanent damage. Clinically, patients may present with chest pain, shortness of breath, or other symptoms of angina. The anatomy involved includes the coronary arteries, which supply blood to the heart. Disease progression can vary; while some patients may experience spontaneous resolution of symptoms, others may develop more severe coronary artery disease over time. Diagnostic considerations include electrocardiograms (ECGs), cardiac enzyme tests, and imaging studies to assess blood flow and identify the presence of thrombosis. It is crucial to differentiate this condition from myocardial infarction, as the management and prognosis differ significantly.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires thorough evaluation of symptoms and diagnostic tests to confirm the absence of myocardial infarction.
  • Treatment complexity: Management may involve antiplatelet therapy, anticoagulants, or other interventions depending on the severity.
  • Documentation requirements: Detailed clinical documentation is necessary to support the diagnosis and treatment plan.
  • Coding specificity: Requires precise coding to differentiate from related conditions such as myocardial infarction (I21) or unstable angina (I20.0).

Audit Risk Factors

  • Common coding errors: Misclassification of acute coronary thrombosis as myocardial infarction.
  • Documentation gaps: Incomplete clinical notes that do not clearly indicate the absence of myocardial infarction.
  • Billing challenges: Potential denials if the diagnosis is not well-supported by clinical documentation.

Specialty Focus

Medical Specialties

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

Internal Medicine

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

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical significance of I24.0 lies in its potential to indicate underlying coronary artery disease, which can affect population health through increased risk of future cardiovascular events. Understanding and accurately coding this condition can improve healthcare utilization patterns by ensuring appropriate management and follow-up. Epidemiologically, acute coronary thrombosis without myocardial infarction highlights the need for preventive measures and early intervention strategies in at-risk populations.

ICD-9 vs ICD-10

The clinical significance of I24.0 lies in its potential to indicate underlying coronary artery disease, which can affect population health through increased risk of future cardiovascular events. Understanding and accurately coding this condition can improve healthcare utilization patterns by ensuring appropriate management and follow-up. Epidemiologically, acute coronary thrombosis without myocardial infarction highlights the need for preventive measures and early intervention strategies in at-risk populations.

Reimbursement & Billing Impact

Reimbursement considerations include ensuring that all relevant diagnostic tests and treatments are documented and coded accurately. Common denials may arise from insufficient documentation or misclassification of the condition. Best practices include thorough clinical notes, clear differentiation from related codes, and adherence to payer-specific guidelines to minimize billing challenges.

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 I24.0?

I24.0 covers acute coronary thrombosis that does not lead to myocardial infarction, including cases where there is transient ischemia without permanent damage to the heart muscle.

When should I24.0 be used instead of related codes?

I24.0 should be used when there is evidence of acute coronary thrombosis without myocardial infarction, as indicated by normal cardiac enzyme levels and specific diagnostic findings.

What documentation supports I24.0?

Documentation should include clinical notes detailing the patient's symptoms, results of ECG and cardiac enzyme tests, and any imaging studies that confirm the diagnosis of acute coronary thrombosis without myocardial infarction.