ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesI25.2

I25.2

Billable

Old myocardial infarction

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

Code Description

ICD-10 I25.2 is a billable code used to indicate a diagnosis of old myocardial infarction.

Key Diagnostic Point:

Old myocardial infarction (MI) refers to a previous heart attack that has occurred at some point in the patient's medical history. Clinically, patients may present with a history of chest pain, dyspnea, or fatigue, often without acute symptoms. The anatomy involved includes the coronary arteries, which supply blood to the heart muscle; damage from the infarction can lead to scarring and reduced blood flow. Disease progression may involve the development of ischemic heart disease, heart failure, or arrhythmias due to the compromised heart muscle. Diagnostic considerations include a thorough patient history, physical examination, and imaging studies such as echocardiograms or stress tests, alongside biomarkers like troponins to assess for ongoing cardiac damage. It is crucial to differentiate old MI from acute coronary syndromes, as management strategies differ significantly.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires understanding of past medical history and potential complications.
  • Treatment complexity: Management may involve lifestyle modifications, medications, and monitoring for heart failure or arrhythmias.
  • Documentation requirements: Requires detailed documentation of past myocardial infarction and current health status.
  • Coding specificity: Must accurately reflect the history of myocardial infarction without acute symptoms.

Audit Risk Factors

  • Common coding errors: Misclassifying old MI as acute MI.
  • Documentation gaps: Incomplete patient history or lack of follow-up documentation.
  • Billing challenges: Potential denials if the history of MI is not clearly documented.

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 I25.2 lies in its association with long-term cardiovascular risk and management strategies. Patients with a history of myocardial infarction are at increased risk for recurrent events, necessitating ongoing monitoring and intervention. Population health impact includes the need for preventive measures and education to reduce the incidence of further cardiovascular events. Quality measures often focus on the management of patients with a history of MI, influencing healthcare utilization patterns and resource allocation in cardiovascular care.

ICD-9 vs ICD-10

The clinical significance of I25.2 lies in its association with long-term cardiovascular risk and management strategies. Patients with a history of myocardial infarction are at increased risk for recurrent events, necessitating ongoing monitoring and intervention. Population health impact includes the need for preventive measures and education to reduce the incidence of further cardiovascular events. Quality measures often focus on the management of patients with a history of MI, influencing healthcare utilization patterns and resource allocation in cardiovascular care.

Reimbursement & Billing Impact

Reimbursement considerations include the need for thorough documentation to support the diagnosis, as insurers may deny claims if the history is not clearly established. Common denials can arise from insufficient documentation of the past MI or failure to link current symptoms to the old MI. Best practices include regular audits of documentation and coding accuracy to ensure compliance and minimize billing issues.

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 I25.2?

I25.2 covers patients with a documented history of myocardial infarction, which may include prior ST-elevation or non-ST-elevation myocardial infarctions, as well as silent MIs that may not have presented with acute symptoms.

When should I25.2 be used instead of related codes?

I25.2 should be used when there is a confirmed history of myocardial infarction without current acute symptoms, differentiating it from codes for acute myocardial infarction or unstable angina.

What documentation supports I25.2?

Documentation should include a clear history of myocardial infarction, results from diagnostic tests confirming past events, and any ongoing treatment or management plans related to the condition.