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v1.0.0
ICD-10 Guide
DiagnosesAtrioventricular Node

Atrioventricular Node

ICD-10 Coding for Atrioventricular Node Disorders(I44.2, I44.1, I44.0)

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

Diagnosis Overview

What is Atrioventricular Node?
Essential facts and insights about Atrioventricular Node Disorders

Key Clinical Considerations:

  • Palpitations, syncope, dizziness, fatigue
  • Electrocardiogram (ECG) showing AV block, Holter monitor results
  • Irregular heart rate, bradycardia, signs of heart failure

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history, physical exam findings, diagnostic test results
  • ICD-10-CM codes related to AV node dysfunction
  • Examples: 'Patient presents with symptomatic bradycardia due to AV block.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for distinguishing between first, second, and third-degree AV blocks.
  • Common errors include misclassifying the degree of block or omitting symptoms.

Code Exclusions

Important Exclusions

  • Bundle branch blocks, other conduction disorders
  • Alternative codes for atrial fibrillation or flutter

Related ICD-10 Codes

Primary Codes
I44.0
Atrioventricular block, first degree
I44.1
Atrioventricular block, second degree
I44.2
Atrioventricular block, third degree
Ancillary Codes
E85.4
Differential Codes
R00.1
R00.1
for bradycardia without evidence of complete AV block.
I44.0
I44.0
for prolonged PR interval without dropped beats.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Cardiology

Specialty Applications

  • Adults with cardiovascular disease, elderly patients, athletes with bradycardia
  • Cardiology clinics, emergency departments, outpatient settings

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 patient history, symptoms, and test results.

Billing considerations?

Ensure correct coding of AV block type and associated symptoms.