What is the ICD-10 code for severe aortic stenosis?

The ICD-10 code for severe nonrheumatic aortic stenosis is I35.0. For rheumatic aortic stenosis, use I06.0. If congenital bicuspid valve is involved, use Q23.83 with I35.0.

How is severe aortic stenosis documented?

Document severe aortic stenosis by specifying etiology (rheumatic or nonrheumatic), echocardiographic findings (AVA, Vmax, mean gradient), and any congenital factors.

ICD-10 Coding for Severe Aortic Stenosis(I35.0, I06.0, I08.0)

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Explore comprehensive ICD-10 coding and documentation guidelines for severe aortic stenosis, including nonrheumatic, rheumatic, and congenital cases.

Also known as:

Aortic Valve StenosisASCalcific Aortic Stenosis

Related ICD-10 Code Ranges

Complete code families applicable to Severe Aortic Stenosis

I00-I99Primary Range

Diseases of the circulatory system

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
I35.0	Nonrheumatic aortic (valve) stenosis	Use when aortic stenosis is confirmed as nonrheumatic with echocardiographic evidence.	Echocardiogram showing AVA ≤1 cm² Vmax ≥4 m/s Mean gradient ≥40 mmHg
I06.0	Rheumatic aortic stenosis	Use when aortic stenosis is due to rheumatic fever.	History of rheumatic fever Echocardiographic evidence of stenosis

Primary ICD-10-CM Codes

Nonrheumatic aortic (valve) stenosis

I35.0Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Rheumatic aortic stenosisI06.0

Nonrheumatic aortic stenosisI35.0

Documentation & Coding Risks

Avoid these common issues when documenting Severe Aortic Stenosis.

Using unspecified aortic stenosis code

Impact

Clinical: Lack of specificity in patient records, Regulatory: Increased audit risk, Financial: Potential reimbursement issues

Mitigation

Always specify etiology and severity, Use detailed echocardiographic data

Failure to specify rheumatic vs. nonrheumatic etiology

Impact

Reimbursement: Potential claim denials or reduced reimbursement, Compliance: Increased audit risk, Data Quality: Inaccurate clinical data

Mitigation

Ensure documentation clearly states the etiology of aortic stenosis.

Omitting congenital bicuspid valve code

Impact

Reimbursement: Loss of specificity in coding, Compliance: Non-compliance with coding guidelines, Data Quality: Incomplete clinical picture

Mitigation

Include Q23.83 when congenital bicuspid valve is present.

Etiology Specification

Impact

Failure to specify rheumatic vs. nonrheumatic etiology increases audit risk.

Mitigation

Ensure documentation includes detailed patient history and echo findings.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with I35.0.

Primary Code

I35.0

Nonrheumatic aortic (valve) stenosis

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ICD-10 Coding for Severe Aortic Stenosis(I35.0, I06.0, I08.0)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for severe aortic stenosis?

How is severe aortic stenosis documented?

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