ICDxICD-10 Medical Coding

ICDxICD-10 Medical Coding

ICD-10 Guide

Atherosclerosis Cardiovascular Disease

ICD-10 Coding for Atherosclerotic Cardiovascular Disease(I25.10, I25.11)

PRIMARY SPECIALTYCardiology

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Atherosclerosis Cardiovascular Disease?

Essential facts and insights about Atherosclerotic Cardiovascular Disease

Key Clinical Considerations:

Presence of chest pain (angina) or discomfort, particularly during exertion or stress.
Elevated levels of low-density lipoprotein (LDL) cholesterol and triglycerides in blood tests.
Physical examination may reveal signs of peripheral artery disease, such as diminished pulses or cool extremities.
Imaging studies like angiography or ultrasound may show narrowed or blocked arteries.
Severity can be assessed based on the extent of arterial blockage and the presence of ischemic symptoms.

Clinical Information

Clinical Criteria & Documentation Requirements

Complete medical history including risk factors such as hypertension, diabetes, and smoking.
Use of specific terms like 'atherosclerosis', 'coronary artery disease', or 'ischemic heart disease' must be documented.
Examples include documenting the patient's symptoms, diagnostic test results, and treatment plans.
Medical necessity must be established through documentation of symptoms and clinical findings.
Quality measures may include documentation of lifestyle modifications and medication adherence.

Coding Guidelines

Usage Guidelines & Examples

Use I25.10 for atherosclerotic heart disease without angina and I25.11 for atherosclerotic heart disease with angina.
Do not use these codes for non-atherosclerotic cardiovascular diseases such as hypertensive heart disease.
Related codes include I20.9 (angina pectoris, unspecified) and I25.2 (old myocardial infarction).
Common errors include using the wrong code for the presence or absence of angina; ensure symptoms are clearly documented.
In complex cases, consider the patient's full clinical picture, including comorbidities and symptomatology.

Code Exclusions

Important Exclusions

Excludes acute coronary syndromes (I21) and other non-atherosclerotic heart diseases.
Alternative codes for excluded conditions include I20 for angina and I21 for myocardial infarction.
Conditions are excluded due to differing pathophysiology and treatment approaches.
Common mistakes include misclassifying acute events as chronic atherosclerotic disease.
Related but distinct conditions include vasospastic angina (I20.1) and hypertensive heart disease (I11).

Specialty Focus

Primary Specialty

Cardiology

Specialty Applications

Applies to patients with a history of coronary artery disease, peripheral artery disease, or cerebrovascular disease.
Patient populations include adults, particularly those over 45 years, with risk factors like obesity and sedentary lifestyle.
Clinical settings include outpatient cardiology clinics, inpatient hospital settings, and emergency departments.
Specialty-specific applications are relevant in cardiology, vascular surgery, and primary care.
Treatment contexts include management of chronic stable angina and post-myocardial infarction care.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

Comprehensive clinical documentation
Accurate code selection based on clinical criteria
Proper exclusion considerations
Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Template: 'Patient diagnosed with atherosclerotic cardiovascular disease based on clinical findings of chest pain and imaging results.'

Template 2

Template: 'Clinical presentation consistent with atherosclerosis including exertional angina and elevated LDL levels.'

Template 3

Template: 'Diagnostic criteria for atherosclerotic heart disease met as evidenced by angiography showing 70% stenosis.'

Template 4

Template: 'Treatment plan initiated for atherosclerotic cardiovascular disease with lifestyle modifications and statin therapy.'

Template 5

Template: 'Follow-up care for atherosclerotic cardiovascular disease including monitoring of blood pressure and lipid levels.'

Billing Information

Billing Considerations

Ensure proper documentation for billing
Verify code specificity requirements
Check for any additional codes needed
Review payer-specific guidelines

Common Issues

Insufficient clinical documentation
Incorrect code selection
Missing supporting diagnoses
Timing and frequency documentation

Frequently Asked Questions

What documentation is required for this diagnosis?

Documentation must include clinical findings, risk factors, and treatment plans.

How does this differ from similar diagnoses?

Differentiation is based on the presence of angina and the specific type of cardiovascular disease.

What are common billing considerations?

Ensure that documentation supports medical necessity and aligns with coding guidelines.

What procedures are typically associated?

Common procedures include stress tests, angiography, and cardiac catheterization.

Are there any quality reporting implications?

Quality measures may include monitoring of cholesterol levels and patient adherence to treatment.