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Z423
Z423 – Advanced nonfluoroscopic computerized mapping and navigation system or procedure duration >4 hours
OHIP Diagnostic and Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Electrophysiologic Pacing, Mapping and Ablation with the use of an advanced nonfluoroscopic computerized mapping and navigation system ("advanced mapping system") and/or procedure duration >4 hours. This procedure includes percutaneous access, insertion of catheters and electrodes, electrocardiograms, intracardiac echocardiograms and image guidance when rendered. It is only eligible for payment when rendered with G176 or G177. Commentary: As of October 2009, the advanced mapping system is typically used in hospital for the mapping of various atrial and ventricular arrhythmias, and congenital heart disease arrhythmia. Examples of procedures lasting more than 4 hours and not utilizing the advanced mapping system are mapping and ablation of multiple accessory pathways and/or thick band accessory pathway(s).
All insured services must be documented in appropriate records to establish that: 1. an insured service was provided; 2. the service for which the account is submitted is the service that was rendered; and 3. the service was medically necessary.
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