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

Complete ICD-10-CM coding and documentation guide for Aortic Root Dilatation. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Dilated Aortic RootAortic Root Enlargement

Related ICD-10 Code Ranges

Complete code families applicable to Aortic Root Dilatation

I77-I78Primary Range

Other disorders of arteries and arterioles

This range includes codes for conditions affecting the aorta, including aortic root dilatation.

Aortic aneurysm and dissection

This range is relevant for differentiating between ectasia and aneurysm of the aorta.

Key Information: ICD-10 code for aortic root dilatation

Essential facts and insights about Aortic Root Dilatation

The ICD-10 code for aortic root dilatation is I77.810, used when the condition does not meet aneurysm criteria.

Primary ICD-10-CM Code for aortic root dilated

Thoracic aortic ectasia
Billable Code

Decision Criteria

clinical Criteria

  • Aortic root diameter within ectasia range without aneurysm criteria

documentation Criteria

  • Imaging reports must specify aortic root measurements and method used

Applicable To

  • Aortic root dilatation without aneurysm

Excludes

Clinical Validation Requirements

  • Aortic root diameter between 3.8-4.9 cm for men and 3.5-4.4 cm for women
  • Imaging evidence from CT, MRI, or echocardiogram

Code-Specific Risks

  • Confusion with aneurysm coding
  • Incorrect documentation of aortic segment

Coding Notes

  • Ensure documentation specifies 'ectasia' and includes precise measurements.

Ancillary Codes

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

Other congenital malformations of aorta

Q25.4
Use for congenital causes like bicuspid aortic valve.

Nonrheumatic aortic valve insufficiency

I35.1
Use when aortic regurgitation is present.

Differential Codes

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

Thoracic aortic aneurysm, without rupture

I71.2
Use when aortic root diameter is ≥5.0 cm or ≥1.5x normal size.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Aortic Root Dilatation to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code I77.810.

Impact

Clinical: Leads to misinterpretation of condition severity., Regulatory: Non-compliance with coding guidelines., Financial: Potential for incorrect billing and reimbursement.

Mitigation Strategy

Train staff on specific documentation requirements, Implement checklist for imaging reports

Impact

Reimbursement: Incorrect DRG assignment can affect payment., Compliance: May lead to coding errors and audits., Data Quality: Impacts accuracy of clinical data.

Mitigation Strategy

Verify aortic diameter and terminology in documentation.

Impact

Lack of specific measurements and terminology can lead to audit findings.

Mitigation Strategy

Regular training and audits of documentation practices.

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 Aortic Root Dilatation, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Aortic Root Dilatation

Use these documentation templates to ensure complete and accurate documentation for Aortic Root Dilatation. These templates include all required elements for proper coding and billing.

Cardiology Progress Note

Specialty: Cardiology

Required Elements

  • Aortic root diameter
  • Imaging modality
  • Clinical findings
  • Associated conditions

Example Documentation

AORTIC ROOT ASSESSMENT: - Diameter: 4.8 cm at mid-sinus (TTE, leading-edge diastolic) - Indexed to BSA: 2.9 cm/m² (height 175 cm, weight 82 kg) - Morphology: Trileaflet valve, no coaptation defect - Hemodynamics: Trace AR, LVEF 60% - Etiology: Familial thoracic aortic disease (FBN1 VUS) - Surveillance Plan: Repeat CTA in 6 months

Examples: Poor vs. Good Documentation

Poor Documentation Example
Aortic root appears dilated on echo.
Good Documentation Example
Thoracic aortic ectasia: Root diameter 4.6 cm at sinuses of Valsalva via TTE (leading-edge, diastolic), BSA-indexed 2.7 cm/m². No dissection. Associated bicuspid aortic valve noted.
Explanation
The good example provides specific measurements, method, and associated conditions, meeting documentation requirements.

Need help with ICD-10 coding for Aortic Root Dilatation? Ask your questions below.

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