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 CodesI25.8

I25.8

Non-billable

Other forms of chronic ischemic heart disease

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

Code Description

ICD-10 I25.8 is a used to indicate a diagnosis of other forms of chronic ischemic heart disease.

Key Diagnostic Point:

I25.8 refers to other forms of chronic ischemic heart disease, which encompasses a variety of heart conditions characterized by reduced blood flow to the heart muscle due to narrowed or blocked coronary arteries. Clinically, patients may present with symptoms such as angina pectoris, shortness of breath, fatigue, and in some cases, may be asymptomatic. 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 attack), heart failure, and arrhythmias as the heart muscle becomes increasingly deprived of oxygen. Diagnostic considerations include a thorough patient history, physical examination, electrocardiograms (ECGs), echocardiograms, and stress testing, along with imaging studies like coronary angiography to assess the extent of coronary artery disease. It is essential to differentiate I25.8 from other specific forms of ischemic heart disease, such as stable angina (I20.9) or acute coronary syndromes (I21-I22), to ensure accurate diagnosis and appropriate management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity
  • Treatment complexity
  • Documentation requirements
  • Coding specificity

Audit Risk Factors

  • Common coding errors include misclassification of acute versus chronic conditions.
  • Documentation gaps may arise from insufficient detail on patient history and symptomatology.
  • Billing challenges often stem from the need for extensive documentation to support the diagnosis.

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 associated with cardiovascular diseases. It is a leading cause of hospitalizations and healthcare utilization, often resulting in extensive resource use for management and treatment. Quality measures focus on early detection and management of risk factors, aiming to improve patient outcomes and reduce the burden of heart disease in the population.

ICD-9 vs ICD-10

Chronic ischemic heart disease significantly impacts population health, contributing to high morbidity and mortality rates associated with cardiovascular diseases. It is a leading cause of hospitalizations and healthcare utilization, often resulting in extensive resource use for management and treatment. Quality measures focus on early detection and management of risk factors, aiming to improve patient outcomes and reduce the burden of heart disease in the population.

Reimbursement & Billing Impact

Reimbursement considerations include ensuring that the diagnosis is supported by clinical evidence and that all relevant procedures are coded accurately. Common denials may occur if documentation does not clearly establish the chronic nature of the condition or if there is insufficient detail regarding the patient's symptoms and treatment plan. Best practices include thorough documentation of patient encounters and ensuring that coding aligns with clinical findings.

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 I25.8?

I25.8 includes various forms of chronic ischemic heart disease not classified elsewhere, such as silent ischemia, coronary artery disease with stable angina, and other chronic conditions leading to myocardial ischemia without acute episodes.

When should I25.8 be used instead of related codes?

I25.8 should be used when the patient has chronic ischemic heart disease that does not fit into more specific categories like stable angina (I20.9) or acute coronary syndromes (I21-I22). It is important to document the chronic nature of the condition.

What documentation supports I25.8?

Documentation should include a detailed patient history, clinical findings, results from diagnostic tests (like ECGs and stress tests), and any treatments provided. Clear evidence of chronic ischemic symptoms and their management is essential.