That is the description the IRS uses. Code W in box 12 of your W-2 represents Company contributions (including employee contributions through a cafeteria plan) to an employee's health savings account (HSA). Your contributions are pre-tax, so by not paying tax on those amounts, you already got the tax deduction.
Usually, your HSA contribution is reported in box 12 of your W-2 with the code W (Company Contributions to Health Savings Account). TurboTax automatically records this amount in the 1099-SA, HSA, MSA section.
Code W reports the combined HSA contributions from you and your employer. So if you contributed $1,500 to your HSA and your employer matched it dollar for dollar, box 12 on your W-2 would show $3,000 with a code W.