ICD-10 Coding for Severe Aortic Stenosis(I35.0, I06.0, Q23.83)
Complete ICD-10-CM coding and documentation guide for Severe Aortic Stenosis. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Severe Aortic Stenosis
I35-I38Primary Range
Diseases of aortic valve
This range includes nonrheumatic aortic valve disorders, including severe aortic stenosis.
Rheumatic heart diseases
This range includes rheumatic aortic stenosis, which is important for distinguishing etiology.
Congenital malformations of the circulatory system
This range includes congenital aortic valve malformations, such as bicuspid aortic valve.
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. |
|
| I06.0 | Rheumatic aortic stenosis | Use when aortic stenosis is due to rheumatic fever. |
|
| Q23.83 | Congenital bicuspid aortic valve | Use when aortic stenosis is due to a congenital bicuspid valve. |
|
Clinical Decision Support
Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.
Key Information: ICD-10 code for severe aortic stenosis
Essential facts and insights about Severe Aortic Stenosis
Primary ICD-10-CM Codes for severe aortic stenosis
Decision Criteria
clinical Criteria
- Echocardiographic evidence of severe stenosis
documentation Criteria
- Clear documentation of nonrheumatic etiology
Applicable To
- Calcific aortic stenosis
- Degenerative aortic stenosis
Excludes
- Rheumatic aortic stenosis (I06.0)
Clinical Validation Requirements
- Echocardiogram showing AVA ≤1 cm²
- Vmax ≥4 m/s
- Mean gradient ≥40 mmHg
Code-Specific Risks
- Misclassification if etiology is not specified
- Potential audit if echo metrics are missing
Coding Notes
- Ensure documentation specifies nonrheumatic etiology to avoid miscoding.
I06.0 - Rheumatic aortic stenosis
Use when aortic stenosis is due to rheumatic fever.
Applicable To
- Aortic stenosis due to rheumatic fever
Excludes
- Nonrheumatic aortic stenosis (I35.0)
Clinical Validation Requirements
- History of rheumatic fever
- Echocardiographic evidence of stenosis
Coding Notes
Ensure rheumatic etiology is clearly documented.
Q23.83 - Congenital bicuspid aortic valve
Use when aortic stenosis is due to a congenital bicuspid valve.
Applicable To
- Bicuspid aortic valve with stenosis
Excludes
- Non-congenital aortic stenosis (I35.0)
Clinical Validation Requirements
- Imaging confirmation of bicuspid valve
- Echocardiographic evidence of stenosis
Coding Notes
Document congenital nature and confirm with imaging.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Severe Aortic Stenosis to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code I35.0.
Impact
Clinical: Lack of specificity in patient records, Regulatory: Increased audit risk, Financial: Potential reimbursement issues
Mitigation Strategy
Always specify etiology and severity, Use detailed echocardiographic data
Impact
Reimbursement: Potential claim denials or reduced reimbursement, Compliance: Increased audit risk, Data Quality: Inaccurate clinical data
Mitigation Strategy
Ensure documentation clearly states the etiology of aortic stenosis.
Impact
Reimbursement: Loss of specificity in coding, Compliance: Non-compliance with coding guidelines, Data Quality: Incomplete clinical picture
Mitigation Strategy
Include Q23.83 when congenital bicuspid valve is present.
Impact
Failure to specify rheumatic vs. nonrheumatic etiology increases audit risk.
Mitigation Strategy
Ensure documentation includes detailed patient history and echo findings.
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 Severe Aortic Stenosis, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Severe Aortic Stenosis
Use these documentation templates to ensure complete and accurate documentation for Severe Aortic Stenosis. These templates include all required elements for proper coding and billing.
Severe Aortic Stenosis Evaluation
Specialty: CardiologyRequired Elements
- Patient symptoms
- Echocardiographic findings
- Etiology of stenosis
- Treatment plan
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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