One of our founders was the technical lead on the original DRG defining project
at the Health Systems Management Group (HSMG) at Yale's School of Organization and
and as part of his work there he
defined and implemented the first DRG assignment software.
As he moved on through his career, he found that he repeatedly needed to assign
DRGs to inpatient hospital stays. So he created a grouper core which was
lightweight, fast and highly portable.
In 1989, he co-founded a
medical informatics consulting firm which ported the
grouping core to a variety of environments. Enough clients and customers wanted
to buy the groupers as products that eventually that business was spun off to a
separate site, which became DRGGroupers.net. (It was originally DRGGroupers.com but we changed it in late 2014.)