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ICD-10 Guide
DiagnosesAortic Root Dilated

Aortic Root Dilated

ICD-10 Coding for Aortic Root Dilatation(I77.810)

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

Diagnosis Overview

What is Aortic Root Dilated?
Essential facts and insights about Aortic Root Dilatation

Key Clinical Considerations:

  • Patients may present with symptoms such as chest pain, dyspnea, or palpitations.
  • Echocardiography may reveal an increased aortic root diameter, typically greater than 4 cm.
  • Physical examination may show a diastolic murmur or signs of aortic regurgitation.
  • Cardiac MRI or CT angiography can provide detailed imaging of the aortic root and assess for associated conditions.
  • Severity may be classified based on the degree of dilation and associated hemodynamic changes.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Medical records must include the patient's symptoms, clinical findings, and diagnostic test results.
  • Specific terminology such as 'aortic root dilatation' or 'aortic root enlargement' must be used.
  • Examples include documenting the size of the aortic root and any associated valvular dysfunction.
  • Medical necessity must be established through documentation of symptoms and the need for diagnostic testing.
  • Quality measures may require documentation of follow-up care and monitoring of the condition.

Coding Guidelines

Usage Guidelines & Examples

  • Use this diagnosis code when a patient has confirmed aortic root dilatation with supporting imaging.
  • Do not use this code for patients with normal aortic root dimensions or unrelated cardiovascular conditions.
  • Related codes include I77.811 (Aortic root dilatation due to hypertension) and I35.0 (Aortic regurgitation).
  • Common errors include misclassifying aortic root dilatation as aortic aneurysm; ensure correct measurements are documented.
  • In complex cases, consider additional codes for associated conditions such as Marfan syndrome or aortic dissection.

Code Exclusions

Important Exclusions

  • Excludes conditions such as aortic aneurysm (I71) and aortic dissection (I71.0).
  • Alternative codes for excluded conditions include I71.9 for unspecified aortic aneurysm.
  • Conditions are excluded due to differing pathophysiology and treatment approaches.
  • Common mistakes include using I77.810 for patients with aortic stenosis; ensure accurate diagnosis.
  • Related but distinct conditions include aortic regurgitation and aortic stenosis.

Related ICD-10 Codes

Primary Codes
I77.810
Aortic root dilatation
I77.811
Aortic root dilatation due to hypertension
Ancillary Codes
Q25.4
I35.1
Differential Codes
I71.2

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Cardiology

Specialty Applications

  • Applies to patients with connective tissue disorders, hypertension, or a history of aortic disease.
  • Patient populations may include adults, particularly those over 50 or with a family history of cardiovascular disease.
  • Clinical settings include outpatient cardiology clinics, inpatient cardiology units, and emergency departments.
  • Specialty-specific applications are primarily in cardiology and vascular medicine.
  • Treatment contexts may involve surgical intervention or medical management based on severity.

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 root dilatation based on echocardiographic findings of 4.5 cm diameter.'

Template 2

Template: 'Clinical presentation consistent with aortic root dilatation including chest pain and dyspnea.'

Template 3

Template: 'Diagnostic criteria met as evidenced by cardiac MRI showing aortic root diameter of 4.8 cm.'

Template 4

Template: 'Treatment plan initiated for aortic root dilatation with beta-blockers and regular follow-up.'

Template 5

Template: 'Follow-up care for aortic root dilatation including monitoring of blood pressure and echocardiographic assessments.'

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, imaging results, and treatment plans.

How does this differ from similar diagnoses?

Aortic root dilatation is specifically related to the enlargement of the aortic root, unlike aortic aneurysms which involve a broader segment.

What are common billing considerations?

Ensure that the diagnosis is supported by imaging and clinical findings to optimize reimbursement.

What procedures are typically associated?

Commonly associated procedures include echocardiography, cardiac MRI, and potential surgical interventions.

Are there any quality reporting implications?

Quality measures may include monitoring for progression of the condition and adherence to treatment guidelines.