If
your current health insurance plan for 2015 has a minimum deductible of $1,300
(or $2,600 for family coverage) with a maximum deductible of $6,450 ($12,900
per family), then it qualifies as an HDHP. The DD indicated in Box 12 of Form
W-2 is the cost of employer sponsored health coverage
Read
more about HDHP health plans in the article below:
https://ttlc.intuit.com/replies/4787500