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ICD-10 Guide
ICD-10 CodesI25.700

I25.700

Billable

Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris

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

Code Description

ICD-10 I25.700 is a billable code used to indicate a diagnosis of atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris.

Key Diagnostic Point:

I25.700 refers to atherosclerosis of coronary artery bypass graft(s) that is unspecified and associated with unstable angina pectoris. This condition arises when there is a buildup of plaque in the grafts used to bypass blocked coronary arteries, leading to reduced blood flow to the heart muscle. Clinically, patients may present with chest pain or discomfort that occurs unpredictably and may worsen with exertion or stress. The anatomy involved includes the coronary arteries and the grafts, which can be either arterial or venous. Disease progression may lead to further ischemic events, heart attacks, or the need for additional interventions. Diagnostic considerations include a thorough patient history, physical examination, and imaging studies such as angiography or stress testing to evaluate the patency of the grafts and the presence of ischemia. Unstable angina is a critical condition that requires immediate medical attention to prevent myocardial infarction.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires understanding of cardiovascular pathology and the implications of graft failure.
  • Treatment complexity: Management may involve medication adjustments, lifestyle changes, and potential surgical interventions.
  • Documentation requirements: Detailed clinical documentation is necessary to support the diagnosis and treatment plan.
  • Coding specificity: Requires precise coding to differentiate from stable angina and other coronary artery diseases.

Audit Risk Factors

  • Common coding errors: Misclassification of stable vs. unstable angina.
  • Documentation gaps: Incomplete records regarding the patient's symptoms and treatment history.
  • Billing challenges: Potential denials due to lack of specificity in documentation or coding errors.

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

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical significance of I25.700 lies in its association with increased risk of myocardial infarction and other cardiovascular events. Unstable angina is a critical condition that can lead to significant morbidity and mortality if not managed promptly. Understanding the epidemiology of this condition can help healthcare providers implement effective prevention strategies and improve patient outcomes. Quality measures related to the management of unstable angina can also enhance healthcare utilization patterns and resource allocation.

ICD-9 vs ICD-10

The clinical significance of I25.700 lies in its association with increased risk of myocardial infarction and other cardiovascular events. Unstable angina is a critical condition that can lead to significant morbidity and mortality if not managed promptly. Understanding the epidemiology of this condition can help healthcare providers implement effective prevention strategies and improve patient outcomes. Quality measures related to the management of unstable angina can also enhance healthcare utilization patterns and resource allocation.

Reimbursement & Billing Impact

reimbursement.

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 I25.700?

I25.700 covers atherosclerosis affecting coronary artery bypass grafts that leads to unstable angina pectoris. This includes cases where the grafts are not functioning optimally due to plaque buildup, resulting in chest pain that is unpredictable and may occur at rest.

When should I25.700 be used instead of related codes?

I25.700 should be used when the patient presents with unstable angina specifically related to graft atherosclerosis. If the angina is stable or not related to grafts, other codes such as I25.701 should be considered.

What documentation supports I25.700?

Documentation should include a detailed patient history, evidence of unstable angina symptoms, results from diagnostic tests (e.g., stress tests, angiograms), and any treatment plans that indicate the management of unstable angina related to grafts.