G659 – Professional component - 60 hours to 13 days recording
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
This fee code is for the professional component of a Level 1 continuous ECG monitoring service. The service involves the physician's interpretation and report of a continuous ambulatory electrocardiographic recording lasting from 60 hours to 13 days. Level 1 monitoring requires a device capable of recording three or more simultaneous channels, capturing all beats, and allowing for analysis and manual review of the entire recording. The system must produce graphical and quantitative reports and include a patient diary with an event marker for symptom-rhythm correlation. The physician's service culminates in a formal report of findings, opinions, and recommendations.
When to Use
- Use G659 when interpreting extended ambulatory ECG recordings (Holter or patch-based) that span between 60 hours and 13 days of continuous data.
- Select this code when the clinical requirement necessitates a multi-channel, full-disclosure analysis that exceeds the duration limits of standard 24-48 hour monitoring (G650 or G658).
Common Pitfalls
- Billing G659 concurrently with G650, G653, G656, G657, or G658 for the same recording period will trigger an automatic rejection due to the mutually exclusive nature of these professional component codes.
- Submitting G659 without ensuring the technical components (G684 for recording and G685 for scanning) are billed separately can lead to audit discrepancies regarding the completeness of the service claim.
Billing Tips
- Ensure the formal report explicitly references the patient diary event markers to satisfy the symptom-rhythm correlation requirement mandated for this specific level of monitoring.
Effective: April 1, 2025
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Diagnostic
Diagnostic and Therapeutic Procedures
In order to claim this service, the physician must provide a written report of the findings, opinions, and recommendations from the ECG recording.
Maximum one professional component, one technical recording component and one technical scanning component per patient, per recording.
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