HCPCS Level II code C1764 designates an implantable cardiac event recorder, a small device placed subcutaneously to monitor and record cardiac rhythm disturbances over prolonged periods. Implantable event recorders are clinically important for diagnosing intermittent arrhythmias, unexplained syncope, and cryptogenic stroke workups, and they influence downstream care decisions such as anticoagulation or device therapy. Nationally, billing for implantable cardiac monitors affects utilization patterns and device management costs across commercial and public payers.

This analysis covers common commercial and public payers, including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of code definition and clinical context, typical sites of service, common billing modifiers and their purpose, and a summary of payer coverage considerations. The publication also summarizes available benchmarks where present, notes policy and reimbursement trends that affect use of implantable event recorders, and outlines common documentation and coding considerations relevant to claims submission.

Intended for billing professionals, clinicians, and policy analysts, the report provides concise guidance on what C1764 represents, which settings it applies to, and which payer populations are relevant. Data not available in the input will be explicitly noted in applicable sections.