This is a box 12 code that will have no impact on your return. It is required to be reported on the W-2 but there is nothing reportable or taxable about this amount on the tax return. Please see this FAQ on Box 12 codes: https://ttlc.intuit.com/replies/3300234
This additional FAQ gives information on how to enter the information into TurboTax: https://ttlc.intuit.com/replies/4785646
Again, while you want to enter it in to avoid e-file mismatches, your return amounts will not be impacted by this reporting.
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