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ICD-10 Guide
ICD-10 CodesI34.81

I34.81

Billable

Nonrheumatic mitral (valve) annulus calcification

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 I34.81 is a billable code used to indicate a diagnosis of nonrheumatic mitral (valve) annulus calcification.

Key Diagnostic Point:

Nonrheumatic mitral valve annulus calcification (MAC) is characterized by the deposition of calcium in the annulus of the mitral valve, which can lead to functional impairment of the valve. Clinically, patients may present with symptoms of heart failure, such as dyspnea, fatigue, and palpitations, particularly in advanced cases. The mitral valve annulus is the fibrous ring that supports the mitral valve leaflets, and calcification can disrupt normal valve function, potentially leading to mitral regurgitation or stenosis. Disease progression may be asymptomatic initially, but as calcification increases, it can compromise hemodynamics and result in significant cardiovascular morbidity. Diagnostic considerations include echocardiography, which can visualize the degree of calcification and assess the functional status of the mitral valve. Other imaging modalities, such as CT scans, may also be utilized for detailed anatomical assessment. It is essential to differentiate MAC from rheumatic heart disease and other valvular pathologies to ensure appropriate management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires imaging studies for accurate diagnosis.
  • Treatment complexity: Management may involve medical therapy or surgical intervention depending on severity.
  • Documentation requirements: Detailed clinical documentation is necessary to support the diagnosis.
  • Coding specificity: Requires precise coding to differentiate from other mitral valve conditions.

Audit Risk Factors

  • Common coding errors: Misidentification of the condition or failure to document the severity.
  • Documentation gaps: Incomplete clinical notes regarding symptoms or imaging findings.
  • Billing challenges: Potential denials if the medical necessity is not clearly established.

Specialty Focus

Medical Specialties

Cardiology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Internal Medicine

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical significance of I34.81 lies in its potential to lead to serious cardiovascular complications, including heart failure and arrhythmias. Population health impact is notable as mitral valve calcification is more prevalent in older adults, contributing to increased healthcare utilization and costs. Quality measures may include monitoring for symptoms of heart failure and ensuring timely interventions. Epidemiologically, understanding the prevalence of MAC can aid in resource allocation and preventive strategies in at-risk populations.

ICD-9 vs ICD-10

The clinical significance of I34.81 lies in its potential to lead to serious cardiovascular complications, including heart failure and arrhythmias. Population health impact is notable as mitral valve calcification is more prevalent in older adults, contributing to increased healthcare utilization and costs. Quality measures may include monitoring for symptoms of heart failure and ensuring timely interventions. Epidemiologically, understanding the prevalence of MAC can aid in resource allocation and preventive strategies in at-risk populations.

Reimbursement & Billing Impact

Reimbursement considerations include the need for clear evidence of the condition's impact on the patient's health and any treatments provided. Common denials may arise from insufficient documentation or failure to demonstrate medical necessity. Coders should ensure that all relevant clinical information is included in the patient's record to support the claim and avoid billing challenges.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by I34.81?

I34.81 specifically covers nonrheumatic mitral valve annulus calcification, which is distinct from rheumatic conditions and other valvular diseases. It is characterized by calcium deposits in the mitral valve annulus without a history of rheumatic fever.

When should I34.81 be used instead of related codes?

I34.81 should be used when there is clear evidence of calcification of the mitral valve annulus without rheumatic involvement. It is important to differentiate it from other mitral valve disorders such as I34.0 and I34.2 based on clinical findings and imaging results.

What documentation supports I34.81?

Documentation should include clinical symptoms, results of echocardiography or other imaging studies showing calcification, and any functional impairment of the mitral valve. Detailed notes on the patient's history and any relevant comorbidities are also essential.