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v1.0.0
ICD-10 Guide
DiagnosesAortic Insufficiency

Aortic Insufficiency

ICD-10 Coding for Aortic Insufficiency(I35.1, I06.1)

PRIMARY SPECIALTYCardiology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Aortic Insufficiency?
Essential facts and insights about Aortic Insufficiency

Key Clinical Considerations:

  • Symptoms may include dyspnea, fatigue, palpitations, and chest pain.
  • Echocardiogram may show regurgitant flow across the aortic valve and left ventricular dilation.
  • Physical examination may reveal a diastolic murmur best heard at the left sternal border.
  • Chest X-ray may show left ventricular enlargement and aortic root dilation.
  • Severity can be assessed based on the degree of regurgitation and left ventricular function.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Document the patient's symptoms, duration, and severity.
  • Use specific terms such as 'aortic regurgitation' or 'aortic insufficiency' in the medical record.
  • Examples include: 'Patient presents with symptoms consistent with aortic insufficiency' or 'Echocardiogram shows moderate aortic regurgitation.'
  • Medical necessity must be established through documented symptoms and diagnostic findings.
  • Quality measures may include documentation of echocardiographic findings and treatment plans.

Coding Guidelines

Usage Guidelines & Examples

  • Use I35.1 for chronic aortic insufficiency and I06.1 for acute aortic insufficiency.
  • Do not use these codes for aortic stenosis or other valvular heart diseases without clear documentation.
  • I35.0 (Aortic stenosis) and I06.0 (Acute rheumatic aortic valve insufficiency) are related but distinct codes.
  • Common errors include misclassifying acute vs. chronic conditions; ensure clear documentation of onset.
  • In complex cases, consider additional codes for associated conditions such as heart failure.

Code Exclusions

Important Exclusions

  • Exclude conditions such as aortic stenosis and mitral valve insufficiency.
  • Use I35.0 for aortic stenosis instead of I35.1.
  • Conditions are excluded due to differing pathophysiology and treatment approaches.
  • Avoid common mistakes like coding aortic insufficiency when only aortic stenosis is documented.
  • Related but distinct conditions include hypertrophic cardiomyopathy and other structural heart diseases.

Related ICD-10 Codes

Primary Codes
I35.1
Chronic aortic insufficiency
I06.1
Acute aortic insufficiency
Ancillary Codes
I50.-
Z95.0
Differential Codes
I06.1
I35.1

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Cardiology

Specialty Applications

  • Applies to patients with aortic valve disorders, including congenital and acquired causes.
  • Patient populations include adults, particularly those over 60, and individuals with rheumatic fever history.
  • Clinical settings include cardiology clinics, hospitals, and emergency departments.
  • Specialty-specific applications are relevant in cardiology and cardiac surgery.
  • Used in treatment contexts such as valve repair or replacement procedures.

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 aortic insufficiency based on echocardiographic findings.'

Template 2

Template: 'Clinical presentation consistent with aortic insufficiency including dyspnea and fatigue.'

Template 3

Template: 'Diagnostic criteria met as evidenced by moderate regurgitation on echocardiogram.'

Template 4

Template: 'Treatment plan initiated for aortic insufficiency with referral for valve surgery.'

Template 5

Template: 'Follow-up care for aortic insufficiency including monitoring of left ventricular function.'

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?

Document symptoms, diagnostic test results, and treatment plans.

How does this differ from similar diagnoses?

Aortic insufficiency involves regurgitation, while aortic stenosis involves obstruction.

What are common billing considerations?

Ensure medical necessity is documented to support claims for echocardiograms and treatments.

What procedures are typically associated?

Common CPT codes include echocardiography and valve repair/replacement procedures.

Are there any quality reporting implications?

Quality measures may include tracking echocardiographic findings and treatment outcomes.