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ICD-10 Coding for Mitral Stenosis(I34.2, I05.0, Q23.2)

Complete ICD-10-CM coding and documentation guide for Mitral Stenosis. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Mitral Valve StenosisMS

Related ICD-10 Code Ranges

Complete code families applicable to Mitral Stenosis

I34-I38Primary Range

Nonrheumatic mitral valve disorders

Covers nonrheumatic mitral stenosis and related conditions.

Rheumatic heart diseases

Includes rheumatic mitral stenosis.

Congenital malformations of the circulatory system

Includes congenital mitral stenosis.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
I34.2Nonrheumatic mitral stenosisUse when mitral stenosis is confirmed as nonrheumatic.
  • Echo report showing valve area ≤1.5 cm²
  • Mean gradient ≥5 mmHg
  • No rheumatic stigmata
I05.0Rheumatic mitral stenosisUse when mitral stenosis is confirmed as rheumatic.
  • Positive ASO titer
  • Echo showing commissural fusion
Q23.2Congenital mitral stenosisUse for congenital cases identified at birth or in early childhood.
  • Pediatric echo showing congenital anomaly

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 mitral stenosis

Essential facts and insights about Mitral Stenosis

The ICD-10 code for nonrheumatic mitral stenosis is I34.2, used when confirmed as nonrheumatic.

Primary ICD-10-CM Codes for mitral stenosis

Nonrheumatic mitral stenosis
Billable Code

Decision Criteria

clinical Criteria

  • Echo findings consistent with nonrheumatic stenosis.

documentation Criteria

  • Absence of rheumatic history in patient records.

Applicable To

  • Calcific mitral stenosis
  • Degenerative mitral stenosis

Excludes

  • Rheumatic mitral stenosis (I05.0)
  • Congenital mitral stenosis (Q23.2)

Clinical Validation Requirements

  • Echo report showing valve area ≤1.5 cm²
  • Mean gradient ≥5 mmHg
  • No rheumatic stigmata

Code-Specific Risks

  • Misclassification if rheumatic history is not ruled out.

Coding Notes

  • Ensure documentation specifies nonrheumatic origin.

Ancillary Codes

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

Heart failure, unspecified

I50.9
Use if heart failure is present with mitral stenosis.

Unspecified atrial fibrillation

I48.91
Use if atrial fibrillation is present with mitral stenosis.

Differential Codes

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

Rheumatic mitral stenosis

I05.0
Confirmed history of rheumatic fever or positive ASO titer.

Congenital mitral stenosis

Q23.2
Present at birth or identified in pediatric cases.

Nonrheumatic mitral stenosis

I34.2
No history of rheumatic fever.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Mitral Stenosis to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code I34.2.

Impact

Clinical: Leads to incorrect treatment plans., Regulatory: Non-compliance with coding standards., Financial: Potential claim denials.

Mitigation Strategy

Always specify etiology in clinical notes., Use templates to ensure completeness.

Impact

Reimbursement: Incorrect reimbursement due to misclassification., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data affecting patient records.

Mitigation Strategy

Verify rheumatic history and use I05.0 if applicable.

Impact

Reimbursement: Potential denial of claims., Compliance: Violation of coding exclusivity rules., Data Quality: Confusion in clinical data interpretation.

Mitigation Strategy

Use I08.0 exclusively for rheumatic multivalvular disease.

Impact

Failure to document etiology can lead to incorrect coding.

Mitigation Strategy

Implement mandatory fields in EHR for etiology.

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 Mitral Stenosis, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Mitral Stenosis

Use these documentation templates to ensure complete and accurate documentation for Mitral Stenosis. These templates include all required elements for proper coding and billing.

Nonrheumatic mitral stenosis with heart failure

Specialty: Cardiology

Required Elements

  • Echo findings
  • Heart failure symptoms
  • Treatment plan

Example Documentation

Assessment: Severe nonrheumatic mitral stenosis with valve area 1.1 cm², mean gradient 14 mmHg. Heart failure present. Plan: Diuresis and rate control.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Mitral stenosis noted.
Good Documentation Example
Severe nonrheumatic mitral stenosis with valve area 1.1 cm², mean gradient 14 mmHg, no rheumatic history.
Explanation
The good example provides specific measurements and excludes rheumatic history, ensuring accurate coding.

Need help with ICD-10 coding for Mitral Stenosis? Ask your questions below.

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