ICD-10 Coding for Nonrheumatic Aortic Stenosis(I35.0, I35.2)
Complete ICD-10-CM coding and documentation guide for Nonrheumatic Aortic Stenosis. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Nonrheumatic Aortic Stenosis
I35-I35.9Primary Range
Nonrheumatic aortic valve disorders
This range includes all nonrheumatic aortic valve disorders, with I35.0 specifically for nonrheumatic aortic stenosis.
Congenital malformations of aortic and mitral valves
Relevant for congenital conditions like bicuspid aortic valve, which may coexist with nonrheumatic aortic stenosis.
Multiple valve diseases
Used when multiple valves are involved, such as mitral and aortic valves.
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 and no other valve involvement is documented. |
|
| I35.2 | Nonrheumatic aortic (valve) stenosis with insufficiency | Use when both stenosis and insufficiency are documented as nonrheumatic. |
|
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 nonrheumatic aortic stenosis
Essential facts and insights about Nonrheumatic Aortic Stenosis
Primary ICD-10-CM Codes for nonrheumatic aortic stenosis
Decision Criteria
clinical Criteria
- Peak velocity ≥4 m/s on echocardiogram
documentation Criteria
- Explicit mention of 'nonrheumatic' etiology
Applicable To
- Calcific aortic stenosis
- Degenerative aortic stenosis
Clinical Validation Requirements
- Echocardiographic peak velocity ≥4 m/s
- Valve area ≤1.0 cm²
Code-Specific Risks
- Incorrectly coding as rheumatic without proper documentation
- Omitting congenital bicuspid valve when present
Coding Notes
- Ensure documentation specifies 'nonrheumatic' to avoid coding errors.
I35.2 - Nonrheumatic aortic (valve) stenosis with insufficiency
Use when both stenosis and insufficiency are documented as nonrheumatic.
Applicable To
- Aortic stenosis with regurgitation
Excludes
- Rheumatic aortic stenosis with insufficiency (I06.2)
Clinical Validation Requirements
- Echocardiographic evidence of both stenosis and regurgitation
Coding Notes
Ensure both stenosis and insufficiency are documented as nonrheumatic.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Congenital bicuspid aortic valve
Q23.81Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Nonrheumatic 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: Inaccurate treatment planning, Regulatory: Non-compliance with coding standards, Financial: Potential for denied claims
Mitigation Strategy
Ensure comprehensive echocardiographic reports, Include all relevant valve details in documentation
Impact
Reimbursement: Incorrect coding may lead to denied claims or incorrect DRG assignment., Compliance: Failure to comply with coding guidelines can result in audits., Data Quality: Inaccurate data affects clinical outcomes and research.
Mitigation Strategy
Ensure documentation explicitly states 'nonrheumatic' or query the provider.
Impact
Reimbursement: Missing codes can affect risk adjustment and reimbursement., Compliance: Non-compliance with coding standards., Data Quality: Incomplete data impacts patient records and treatment plans.
Mitigation Strategy
Always code Q23.81 when a bicuspid valve is documented.
Impact
Risk of audits if etiology is not clearly documented.
Mitigation Strategy
Implement provider education on documentation requirements.
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 Nonrheumatic Aortic Stenosis, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Nonrheumatic Aortic Stenosis
Use these documentation templates to ensure complete and accurate documentation for Nonrheumatic Aortic Stenosis. These templates include all required elements for proper coding and billing.
Cardiology Progress Note
Specialty: CardiologyRequired Elements
- Etiology of aortic stenosis
- Echocardiographic findings
- Valve involvement
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
Need help with ICD-10 coding for Nonrheumatic Aortic Stenosis? Ask your questions below.