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ICD-10 Guide
ICD-10 CodesI48.2

I48.2

Non-billable

Chronic atrial fibrillation

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

Code Description

ICD-10 I48.2 is a used to indicate a diagnosis of chronic atrial fibrillation.

Key Diagnostic Point:

Chronic atrial fibrillation (AF) is a common cardiac arrhythmia characterized by irregular and often rapid heart rate, leading to poor blood flow. It occurs when the heart's two upper chambers (the atria) experience chaotic electrical signals, causing them to quiver instead of contracting effectively. This condition can lead to various complications, including stroke, heart failure, and other heart-related issues. The anatomy involved primarily includes the atria, the sinoatrial node, and the conduction pathways of the heart. Disease progression may vary; some patients may remain asymptomatic for years, while others may experience significant symptoms such as palpitations, fatigue, and dyspnea. Diagnostic considerations include an electrocardiogram (ECG) to confirm the presence of AF, along with echocardiography to assess cardiac function and structure. Chronic AF can be classified into paroxysmal, persistent, and permanent forms, with I48.2 specifically denoting the chronic form, which is often more challenging to manage and requires ongoing treatment strategies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity
  • Treatment complexity
  • Documentation requirements
  • Coding specificity

Audit Risk Factors

  • Common coding errors include misclassification of AF type.
  • Documentation gaps may arise from insufficient detail on patient history and treatment plans.
  • Billing challenges often stem from the need for comprehensive documentation to support ongoing treatment and management.

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

Primary Care

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

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Chronic atrial fibrillation significantly impacts population health, contributing to increased rates of stroke and heart failure, which in turn elevate healthcare utilization and costs. Quality measures often focus on appropriate anticoagulation therapy and rhythm control strategies to mitigate risks. Epidemiologically, AF prevalence is rising, particularly among older adults, necessitating effective management strategies to improve patient outcomes and reduce healthcare burdens.

ICD-9 vs ICD-10

Chronic atrial fibrillation significantly impacts population health, contributing to increased rates of stroke and heart failure, which in turn elevate healthcare utilization and costs. Quality measures often focus on appropriate anticoagulation therapy and rhythm control strategies to mitigate risks. Epidemiologically, AF prevalence is rising, particularly among older adults, necessitating effective management strategies to improve patient outcomes and reduce healthcare burdens.

Reimbursement & Billing Impact

Reimbursement considerations include the complexity of care provided, such as medication management and potential procedures like catheter ablation. Common denials may arise from insufficient documentation or failure to demonstrate medical necessity for ongoing treatment. Best practices include maintaining detailed records of patient interactions, treatment responses, and any changes in the patient's condition to support claims.

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 I48.2?

I48.2 specifically covers chronic atrial fibrillation, which is defined by the presence of AF lasting longer than seven days or requiring intervention to restore normal rhythm. It may also include patients with permanent AF who are not candidates for rhythm control.

When should I48.2 be used instead of related codes?

I48.2 should be used when the patient has chronic atrial fibrillation that is persistent or permanent. It is important to differentiate it from paroxysmal AF (I48.0) which is intermittent and resolves spontaneously.

What documentation supports I48.2?

Documentation should include the patient's history of AF, results from ECGs confirming the diagnosis, treatment plans, and any complications or comorbidities associated with chronic AF.