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ICD-10 Coding for Chronic Ischemic Heart Disease(I25.1, I25.2)

Complete ICD-10-CM coding and documentation guide for Chronic Ischemic Heart Disease. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Coronary Artery DiseaseChronic Coronary Syndrome

Related ICD-10 Code Ranges

Complete code families applicable to Chronic Ischemic Heart Disease

I20-I25Primary Range

Ischemic Heart Diseases

This range includes all codes related to ischemic heart diseases, including chronic forms.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
I25.1Atherosclerotic heart disease of native coronary arteryUse when atherosclerosis of native coronary arteries is documented.
  • Coronary angiography showing ≥50% stenosis
  • Documented history of CAD
I25.2Old myocardial infarctionUse when documenting a past MI with no current symptoms.
  • Documented history of MI with no symptoms for ≥28 days

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for chronic ischemic heart disease

Essential facts and insights about Chronic Ischemic Heart Disease

The ICD-10 code for chronic ischemic heart disease is I25.1, covering atherosclerotic heart disease of native coronary artery.

Primary ICD-10-CM Codes for chronic ischemic heart disease

Atherosclerotic heart disease of native coronary artery
Non-billable Code

Decision Criteria

clinical Criteria

  • Presence of atherosclerosis in native coronary arteries

Applicable To

  • Atherosclerosis of native coronary artery

Excludes

  • Acute myocardial infarction (I21.-)

Clinical Validation Requirements

  • Coronary angiography showing ≥50% stenosis
  • Documented history of CAD

Code-Specific Risks

  • Misclassification if angina is not documented

Coding Notes

  • Ensure documentation specifies native coronary artery involvement.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Chronic systolic heart failure

I50.22
Use when chronic systolic heart failure is present alongside ischemic heart disease.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Old myocardial infarction

I25.2
Use I25.2 when the myocardial infarction occurred more than 28 days ago and there are no recurrent symptoms.

Acute myocardial infarction, unspecified

I21.9
Use I21.9 for acute MI events occurring within 28 days.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Chronic Ischemic Heart Disease to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code I25.1.

Impact

Clinical: May lead to inappropriate treatment plans., Regulatory: Non-compliance with documentation standards., Financial: Potential for denied claims.

Mitigation Strategy

Ensure angina type is documented in the patient's record.

Impact

Reimbursement: Incorrect coding may lead to reduced reimbursement., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation Strategy

Upgrade to I25.11x if atherosclerotic heart disease with angina is documented.

Impact

Lack of specificity in documenting coronary artery disease.

Mitigation Strategy

Implement detailed documentation templates.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Chronic Ischemic Heart Disease, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Chronic Ischemic Heart Disease

Use these documentation templates to ensure complete and accurate documentation for Chronic Ischemic Heart Disease. These templates include all required elements for proper coding and billing.

Stable angina with known CAD

Specialty: Cardiology

Required Elements

  • Chief complaint
  • Imaging results
  • Laboratory findings
  • Assessment and plan

Example Documentation

Patient presents with exertional chest pain. Coronary CTA shows 70% stenosis in RCA. LDL 140 mg/dL. Assessment: Chronic ischemic heart disease with stable angina.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has CAD.
Good Documentation Example
Patient has atherosclerotic heart disease of native coronary artery with stable angina.
Explanation
The good example specifies the type of coronary artery disease and the presence of angina.

Need help with ICD-10 coding for Chronic Ischemic Heart Disease? Ask your questions below.

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