I confused terms and entered witholding for an employee Health Insurance plan for an HSA - now the tax return reflects a large contribution to the HSA that is incorrect.
To revisit your HSA screen in TurboTax to check your HSA contributions, you can use the instructions below. However, if they were on your W-2 (Box 12 Code W) you won't be able to change the amount. Also, if they were on your W-2 they should not be entered as an HSA Contribution under HSA because it will double your amount.
Your screens will look something like this:
Click here for "What is a health savings account (HSA)?
Click here for more detailed information regarding HSA contributions.