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ICD-10 Guide
ICD-10 CodesI25.89

I25.89

Billable

Other forms of chronic ischemic heart disease

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

Code Description

ICD-10 I25.89 is a billable code used to indicate a diagnosis of other forms of chronic ischemic heart disease.

Key Diagnostic Point:

I25.89 refers to other forms of chronic ischemic heart disease, which encompasses a variety of conditions characterized by reduced blood flow to the heart muscle due to coronary artery disease (CAD). Clinically, patients may present with symptoms such as angina pectoris, fatigue, shortness of breath, and palpitations. The anatomy involved primarily includes the coronary arteries, which supply blood to the heart. Over time, chronic ischemic heart disease can lead to myocardial infarction, heart failure, and arrhythmias due to prolonged oxygen deprivation. Diagnostic considerations include a thorough patient history, physical examination, electrocardiograms (ECGs), stress testing, and imaging studies such as echocardiograms or coronary angiography to assess the extent of ischemia and rule out other cardiac conditions. This code is used when the ischemic heart disease does not fit into more specific categories, highlighting the need for careful clinical assessment and documentation to ensure accurate coding and treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires comprehensive evaluation of symptoms and diagnostic tests.
  • Treatment complexity: Management may involve lifestyle changes, medications, and possibly surgical interventions.
  • Documentation requirements: Detailed clinical documentation is necessary to support the diagnosis.
  • Coding specificity: Must differentiate from other ischemic heart diseases and related conditions.

Audit Risk Factors

  • Common coding errors: Misclassification with more specific ischemic heart disease codes.
  • Documentation gaps: Insufficient clinical details to support the diagnosis.
  • Billing challenges: Potential for denials if documentation does not clearly justify the use of I25.89.

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

Chronic ischemic heart disease significantly impacts population health, contributing to high morbidity and mortality rates. It is a leading cause of hospitalizations and healthcare utilization, often resulting in increased healthcare costs. Quality measures related to the management of ischemic heart disease focus on timely diagnosis, effective treatment, and patient education to improve outcomes and reduce complications.

ICD-9 vs ICD-10

Chronic ischemic heart disease significantly impacts population health, contributing to high morbidity and mortality rates. It is a leading cause of hospitalizations and healthcare utilization, often resulting in increased healthcare costs. Quality measures related to the management of ischemic heart disease focus on timely diagnosis, effective treatment, and patient education to improve outcomes and reduce complications.

Reimbursement & Billing Impact

reimbursement. Common denials may arise from insufficient documentation or failure to demonstrate medical necessity for the services rendered. It is essential to follow coding best practices, including using the most specific code available and ensuring that all services billed are supported by the documentation.

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 I25.89?

I25.89 covers various forms of chronic ischemic heart disease not classified elsewhere, including atypical angina, silent ischemia, and ischemic heart disease due to other underlying conditions such as vasospasm or microvascular dysfunction.

When should I25.89 be used instead of related codes?

I25.89 should be used when the patient's chronic ischemic heart disease does not fit into more specific categories like I25.1 or I25.2, ensuring that the clinical presentation aligns with the broader classification.

What documentation supports I25.89?

Documentation should include a detailed history of symptoms, results from diagnostic tests (like ECGs and imaging), and any previous interventions or treatments that have been attempted.