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v1.0.0
ICD-10 Guide
DiagnosesHigh Grade Atrioventricular Block

High Grade Atrioventricular Block

ICD-10 Coding for High-Grade Atrioventricular Block(I44.1)

PRIMARY SPECIALTYCardiology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is High Grade Atrioventricular Block?
Essential facts and insights about High-Grade Atrioventricular Block

Key Clinical Considerations:

  • Symptoms may include syncope, dizziness, fatigue, and palpitations.
  • Key diagnostic tests include ECG showing prolonged PR interval and dropped beats.
  • Physical exam may reveal bradycardia and irregular pulse.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Document patient's symptoms, ECG findings, and any treatment provided.
  • Use specific terms like 'complete heart block' or 'third-degree AV block'.
  • Example: 'Patient presented with syncope and ECG confirmed high-grade AV block.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for distinguishing between complete and incomplete blocks.
  • Common errors include misclassifying the degree of block.

Code Exclusions

Important Exclusions

  • Excludes conditions like bundle branch block and other conduction disorders.
  • Alternative codes may include I44.1 for first-degree AV block.

Related ICD-10 Codes

Primary Codes
I44.2
High-grade atrioventricular block
Ancillary Codes
Z95.0
I25.1
Differential Codes
I44.2
I44.2
only if there are no conducted beats.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Cardiology

Specialty Applications

  • Primarily affects older adults and patients with underlying heart disease.
  • Commonly encountered in cardiology clinics and emergency departments.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Include detailed ECG findings and patient symptoms.

Billing considerations?

Ensure accurate coding to reflect severity and treatment provided.