The code from box 12 of your W-2 for HSA (Health Savings Account) is code W (Employer Contributions to Health Savings Account).
To understand Box 12 codes on
your W-2 see FAQ below:
https://ttlc.intuit.com/replies/3300234
If your HSA contribution has not been reported in Box 12 of your W-2 see FAQ below: https://ttlc.intuit.com/replies/4557768
