How can I check if my employer's high deductible health plan meets the minimum value standard?

The IRS and HealthCare.gov websites indicate you will need to ask your employer if the offered insurance meets the minimum value standard.

To find out if your job-based plan meets the minimum value standard, ask your employer. You can also ask them to fill out the Employer Coverage Tool (PDF, 125 KB)
_{HealthCare.gov - Minimum value - Glossary}

Under proposed regulations PDF upon which taxpayers may rely, employers generally must use a minimum value calculator developed by HHS to determine if a plan with standard features provides minimum value.
_{Irs.gov - Minimum value and affordability}

The IRS page links to the CMS's Medicare Regulations and Guidance which contains an Excel-based Minimum Value Calculator and a PDF explaining the calculator's methodology.