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ICD-10 Guide
ICD-10 CodesChapter 9: Diseases of the circulatory systemI24

I24

Non-billable

Other acute ischemic heart diseases

Chapter 9:Diseases of the circulatory system

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

Code Description

ICD-10 I24 is a used to indicate a diagnosis of other acute ischemic heart diseases.

Key Diagnostic Point:

I24 encompasses other acute ischemic heart diseases that do not fall under more specific categories such as acute myocardial infarction or unstable angina. Clinically, patients may present with chest pain, shortness of breath, or other symptoms indicative of myocardial ischemia. The anatomy involved primarily includes the coronary arteries, which supply blood to the heart muscle. Disease progression can vary, with some patients experiencing transient ischemic episodes while others may develop more severe conditions leading to myocardial infarction. Diagnostic considerations include electrocardiograms (ECGs), cardiac enzyme tests, and imaging studies to assess blood flow and heart function. It is crucial to differentiate I24 from other ischemic heart disease codes to ensure accurate diagnosis and treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires thorough assessment to differentiate from other ischemic conditions.
  • Treatment complexity: May involve various interventions including medications, lifestyle changes, or surgical options.
  • Documentation requirements: Detailed clinical notes are necessary to support the diagnosis.
  • Coding specificity: Requires precise coding to avoid misclassification.

Audit Risk Factors

  • Common coding errors: Misuse of I24 when a more specific code is applicable.
  • Documentation gaps: Incomplete clinical notes that do not support the diagnosis.
  • Billing challenges: Potential denials if documentation does not clearly justify the use of I24.

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 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

I24 has significant clinical implications as it addresses a range of acute ischemic heart diseases that can lead to severe outcomes if not managed appropriately. The population health impact is notable, as ischemic heart disease remains a leading cause of morbidity and mortality worldwide. Quality measures often focus on timely diagnosis and treatment of acute ischemic conditions, influencing healthcare utilization patterns and resource allocation in cardiovascular care.

ICD-9 vs ICD-10

I24 has significant clinical implications as it addresses a range of acute ischemic heart diseases that can lead to severe outcomes if not managed appropriately. The population health impact is notable, as ischemic heart disease remains a leading cause of morbidity and mortality worldwide. Quality measures often focus on timely diagnosis and treatment of acute ischemic conditions, influencing healthcare utilization patterns and resource allocation in cardiovascular care.

Reimbursement & Billing Impact

Reimbursement considerations include the need for comprehensive clinical notes that detail the patient's symptoms, diagnostic tests performed, and treatment plans. Common denials may arise from insufficient documentation or incorrect code selection. Best practices include using specific codes when applicable, maintaining clear and thorough documentation, and regularly reviewing coding guidelines to stay compliant with payer requirements.

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?

I24 includes conditions such as acute coronary syndrome not classified elsewhere, transient ischemic attacks affecting the heart, and other acute ischemic episodes that do not meet the criteria for myocardial infarction or unstable angina.

When should I24 be used instead of related codes?

I24 should be used when a patient presents with acute ischemic heart disease symptoms that do not fit the criteria for more specific codes like I20 or I21. It is essential to document the clinical scenario thoroughly to justify the use of I24.

What documentation supports I24?

Documentation should include a detailed clinical history, physical examination findings, results from diagnostic tests such as ECGs and cardiac biomarkers, and any imaging studies that support the diagnosis of acute ischemic heart disease.