Cardiac Event Monitors

Aetna covers external intermittent cardiac event monitors (including external loop recorders and versions with real‑time transmission) as medically necessary to document suspected arrhythmias when a Holter monitor or 48‑hour telemetry is non‑diagnostic or for infrequent (less than daily) symptoms — including suspected atrial fibrillation after cryptogenic stroke, ST‑segment depression for ischemia, assessment of response after initiating antiarrhythmic therapy, and documentation of recurrence after drug discontinuation. Devices/technologies are considered experimental/investigational (and not covered) for indications not explicitly listed in the policy — including mobile cardiovascular telemetry (MCT), implantable loop recorders (ILRs), and specific products such as Biotronik BioMonitor, CardioPatch, KardiaMobile (AliveCor), BodyGuardian/iHEART systems, consumer/smartphone ECG apps/devices, ViSi Mobile, and Zio Patch for documenting post‑drug therapy response.