Microvolt T-Wave Alternans (MTWA)
The Centers for Medicare and Medicaid Services (CMS) was asked to reconsider the national coverage determination (NCD) on microvolt t-wave alternans (MTWA) diagnostic testing to extend coverage to the modified moving average (MMA) method. Following its review, CMS determines that the MMA method of determining MTWA is not reasonable and necessary. Therefore, the current policy remains in place that provides for coverage of MTWA testing for the evaluation of patients at risk for sudden cardiac death only when the spectral analysis method is used.
Issued by: Centers for Medicare & Medicaid Services (CMS)
Issue Date: July 25, 2008
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