CurrentBlue Cross Blue Shield - Rhode IslandPolicy N/A

Signal-Averaged Electrocardiography (SAECG) Coverage Policy

This policy governs coverage determinations for signal-averaged electrocardiography (SAECG) for BlueCHiP for Medicare and Commercial members of Blue Cross & Blue Shield of Rhode Island.

Policy Summary

PayerBlue Cross Blue Shield - Rhode Island

PolicySignal-Averaged Electrocardiography (SAECG) Coverage Policy

Policy CodePolicy N/A

Change TypeNo material changes

Effective DateFeb 12, 2001

Next Review DateN/A

Key ActionVerify member benefits and refer to the Evidence of Coverage or Benefit Booklet before billing.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

1CPT code listed as not medically necessary

2001-12-02effective date

2020-04-02policy last updated

Not med. necessaryCommercial stance

Not coveredMedicare stance

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Coverage determinations

Coverage stance by product

BlueCHiP for Medicare: Signal-averaged electrocardiography is not covered as there is insufficient medical literature to support the efficacy of this service.

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Commercial: Signal-averaged electrocardiography is not medically necessary as there is insufficient medical literature to support the efficacy of this service.

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General clinical conclusion: SAECG has not demonstrated improvements in health outcomes and remains not medically necessary for all indications.

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Benefits and coverage for specific services can vary between employer groups and insurance contracts. Refer to the member’s Evidence of Coverage, Subscriber Agreement, or Benefit Booklet to determine any group-specific exclusions, limitations, or non‑covered benefits before billing or scheduling services.

Signal‑averaged electrocardiography (SAECG), CPT 93278, is designated not medically necessary for Commercial products. For BlueCHiP for Medicare, SAECG is not covered due to insufficient medical literature supporting its efficacy; the procedure code 93278 is listed as not medically necessary/not covered for both BlueCHiP for Medicare and Commercial products.

Provider Responsibilities and Actions

Prior Authorization

Prior authorization / coverage status

Signal-averaged electrocardiography (CPT 93278) is designated not medically necessary / not covered for the referenced products; prior authorization does not apply to a service that is not covered.

Code: 93278 — Signal-averaged electrocardiography (SAECG), with or without ECG
Prior authorization is not applicable when the service is not covered or is designated not medically necessary.

Step Therapy

Step therapy

No step therapy requirements are specified for SAECG in this policy.

Documentation Required

Verify benefits

Verify member benefits and refer to the Evidence of Coverage, Subscriber Agreement or Benefit Booklet for specific coverage details and any member cost-share before billing.

Benefits and eligibility are determined by the member's subscriber agreement, member certificate, and/or employer agreement and those documents supersede this medical policy.
For member-specific benefits, contact the provider call center.

Denial Risk

Coverage denial risk for CPT 93278

Claims for SAECG (CPT 93278) are at risk for denial because the service is considered not covered for BlueCHiP for Medicare and not medically necessary for Commercial products.

The policy lists CPT 93278 as not medically necessary/not covered for the referenced products.
Billing for this service may be denied; do not bill members unless they have agreed in writing to pay when a service is non-covered (see subscriber agreement).

Background

Signal‑averaged electrocardiography (SAECG) is a computerized analysis of small segments of the standard electrocardiogram to detect ventricular late potentials (VLPs). VLPs are abnormal, low‑amplitude, late electrical signals arising from viable myocardial tissue bordering an infarct and are thought to reflect slow or fragmented conduction that may predispose to ventricular tachyarrhythmias. SAECG has been investigated as one risk stratification tool among others (for example, left ventricular ejection fraction, Holter monitoring, electrophysiologic studies, heart rate variability, baroreceptor sensitivity, and T‑wave alternans) but has not demonstrated improvements in health outcomes and therefore remains not medically necessary for all indications.

Key Definitions

Ventricular late potentials (VLPs) — definition and clinical significance

DefinitionAbnormal, low‑amplitude, high‑frequency electrical signals occurring at the terminal portion of the QRS complex detected by SAECG.

PathophysiologyVentricular late potentials reflect aberrant, asynchronous impulses arising from viable isolated myocardium bordering an infarcted area.

Clinical significanceVLPs have been investigated as a risk factor for ventricular tachyarrhythmias and sudden cardiac death, and were studied for risk stratification in patients with prior MI and cardiomyopathy.

Role in managementIdentification of VLPs has been used to help target therapies for patients at high risk of ventricular arrhythmias, including antiarrhythmic drugs or implantable cardioverter‑defibrillators (ICDs).

LimitationsAlthough studied as one of multiple risk stratification tools, SAECG and VLP detection have not demonstrated improvements in health outcomes and are considered not medically necessary for all indications in this policy.

Signal‑averaged electrocardiography (SAECG) — definition and method

Test definitionSignal‑averaged electrocardiography (SAECG) is a computerized analysis technique of small segments of a standard ECG to detect ventricular late potentials that may be obscured by background skeletal muscle activity.

MethodComputerized averaging and analysis of multiple ECG beats to enhance low‑amplitude, high‑frequency signals at the terminal QRS that are not apparent on a standard ECG.

PurposeUsed to detect VLPs as a potential risk marker for ventricular tachyarrhythmias and to contribute to arrhythmic risk stratification alongside other tests (e.g., LVEF, Holter monitoring, electrophysiologic studies).

Clinical contextSAECG is one of several investigational risk‑stratification tools and measures beat‑averaged conduction, distinct from techniques such as T‑wave alternans which measure beat‑to‑beat variability.