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v1.0.0
ICD-10 Guide
DiagnosesCardiac Pacemaker

Cardiac Pacemaker

ICD-10 Coding for Cardiac Pacemaker(Z95.0, Z45.018, I49.5)

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

Diagnosis Overview

What is Cardiac Pacemaker?
Essential facts and insights about Cardiac Pacemaker

Key Clinical Considerations:

  • Bradycardia or heart block symptoms
  • Electrocardiogram (ECG) showing abnormal heart rhythms
  • Decreased heart rate during physical examination

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history and physical examination details
  • Indications for pacemaker placement
  • Post-operative follow-up notes

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding bradycardia and heart block accurately.
  • Common errors include misclassifying the type of heart block.

Code Exclusions

Important Exclusions

  • Patients with temporary pacing needs only
  • Alternative codes for other cardiac devices

Related ICD-10 Codes

Primary Codes
I49.5
Cardiac arrest due to bradycardia
I44.2
Atrioventricular block, complete
Z95.0
Presence of cardiac pacemaker
Ancillary Codes
Z00.6
T82.1XXA
Differential Codes
Z45.018
Z95.0
I44.2

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Cardiology

Specialty Applications

  • Patients with symptomatic bradycardia or heart block
  • Cardiology clinics and hospitals performing pacemaker insertions

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

What are the documentation requirements?

Include patient history, indication for pacemaker, and follow-up assessments.

What are the billing considerations?

Ensure correct coding of diagnosis and procedure, and verify insurance coverage for pacemaker placement.