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v1.0.0
ICD-10 Guide
ICD-10 CodesI44.1

I44.1

Billable

Atrioventricular block, second degree

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

Code Description

ICD-10 I44.1 is a billable code used to indicate a diagnosis of atrioventricular block, second degree.

Key Diagnostic Point:

Atrioventricular block, second degree, is characterized by a partial interruption of electrical conduction between the atria and ventricles of the heart. This condition can manifest as either Mobitz type I (Wenckebach) or Mobitz type II. In Mobitz type I, there is a progressive lengthening of the PR interval until a beat is dropped, while Mobitz type II involves intermittent dropped beats without prior lengthening of the PR interval. Clinically, patients may present with palpitations, dizziness, or syncope, particularly during exertion. The anatomy involved includes the atrioventricular node, which is crucial for coordinating the heart's electrical signals. Disease progression can vary; Mobitz type I is often benign and may resolve spontaneously, whereas Mobitz type II can progress to complete heart block and may require intervention. Diagnostic considerations include electrocardiogram (ECG) findings, patient history, and potential underlying conditions such as ischemic heart disease or cardiomyopathy. Regular monitoring and assessment of symptoms are essential for managing this condition effectively.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

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

Audit Risk Factors

  • Common coding errors
  • Documentation gaps
  • Billing challenges

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

Atrioventricular block, second degree, has significant clinical implications, particularly in older populations or those with existing heart conditions. It can lead to increased healthcare utilization due to the need for monitoring and potential interventions. Quality measures may include the timely identification and management of this condition to prevent progression to more severe heart block types. Epidemiologically, understanding the prevalence of second-degree AV block can inform public health strategies aimed at cardiovascular health.

ICD-9 vs ICD-10

Atrioventricular block, second degree, has significant clinical implications, particularly in older populations or those with existing heart conditions. It can lead to increased healthcare utilization due to the need for monitoring and potential interventions. Quality measures may include the timely identification and management of this condition to prevent progression to more severe heart block types. Epidemiologically, understanding the prevalence of second-degree AV block can inform public health strategies aimed at cardiovascular health.

Reimbursement & Billing Impact

Reimbursement considerations include the potential need for monitoring or intervention, such as pacemaker insertion for Mobitz type II. Common denials may arise from insufficient documentation of the diagnosis or lack of supporting clinical evidence. Best practices include ensuring that all relevant clinical details are captured in the medical record and that coding aligns with the documented diagnosis.

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 I44.1?

I44.1 covers second-degree atrioventricular block, specifically Mobitz type I and type II. It is essential to differentiate between these types based on ECG findings and clinical presentation.

When should I44.1 be used instead of related codes?

I44.1 should be used when there is a confirmed diagnosis of second-degree AV block. It is important to differentiate it from first-degree AV block (I44.0) and complete heart block (I44.2) based on the severity and clinical implications.

What documentation supports I44.1?

Documentation should include ECG results showing the characteristics of the second-degree AV block, patient symptoms, and any relevant medical history that may contribute to the condition.