ICD-10 Coding for Mild Aortic Stenosis(I35.0, Q23.1)
Complete ICD-10-CM coding and documentation guide for Mild Aortic Stenosis. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Mild Aortic Stenosis
I35-I35.9Primary Range
Nonrheumatic Aortic Valve Disorders
This range includes codes for nonrheumatic aortic stenosis, which is the primary category for mild aortic stenosis when it is not congenital.
Congenital Malformations of Aortic and Mitral Valves
This range includes codes for congenital aortic stenosis, which is relevant if the stenosis is due to a congenital bicuspid 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 mild aortic stenosis is confirmed by echocardiographic parameters and is nonrheumatic. |
|
| Q23.1 | Congenital aortic valve stenosis | Use when mild 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 mild aortic stenosis
Essential facts and insights about Mild Aortic Stenosis
Primary ICD-10-CM Codes for mild aortic stenosis
Decision Criteria
clinical Criteria
- Echocardiogram confirms nonrheumatic etiology with specified parameters.
documentation Criteria
- Absence of rheumatic history in patient records.
Applicable To
- Calcific aortic stenosis
Clinical Validation Requirements
- Echocardiogram showing peak velocity 2.0-2.9 m/s
- Mean gradient 10-19 mmHg
- Aortic valve area 1.5-2.9 cm²
Code-Specific Risks
- Misclassification if echocardiographic parameters are not documented
- Incorrect use if etiology is not specified
Coding Notes
- Ensure echocardiographic parameters are documented to support the diagnosis.
Q23.1 - Congenital aortic valve stenosis
Use when mild aortic stenosis is due to a congenital bicuspid valve.
Applicable To
- Bicuspid aortic valve with stenosis
Excludes
- Nonrheumatic aortic stenosis (I35.0)
Clinical Validation Requirements
- Echocardiogram showing congenital bicuspid valve morphology
- Documentation of congenital etiology
Coding Notes
Ensure congenital nature is documented to support the use of this code.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Presence of aortic valve replacement
Z95.2Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Mild 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 claim denials.
Mitigation Strategy
Always document the etiology of stenosis in clinical notes.
Impact
Reimbursement: May result in denied claims due to lack of supporting documentation., Compliance: Non-compliance with ICD-10 coding guidelines., Data Quality: Inaccurate clinical data affecting patient care and research.
Mitigation Strategy
Ensure echocardiographic parameters are documented in the medical record.
Impact
Lack of detailed echo parameters can lead to audit issues.
Mitigation Strategy
Ensure all echo findings are documented in the patient's record.
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 Mild Aortic Stenosis, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Mild Aortic Stenosis
Use these documentation templates to ensure complete and accurate documentation for Mild Aortic Stenosis. These templates include all required elements for proper coding and billing.
Cardiology Progress Note
Specialty: CardiologyRequired Elements
- Assessment of aortic stenosis
- Echocardiographic parameters
- Etiology of stenosis
- Symptoms or lack thereof
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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