Based on the HCUP Statistical Brief #180 *, I estimate the estimated frequency of someone aged 0-64 having one or more hospital stays to be .1 (or 1 out of every 10 people).
This allows me to back into a average cost per hospital stay of $16,500 ($1,657/.1, rounded).
Using our internal MCS tool, I assumed a lognormal distribution and simulated 1,000,000 years of possible outcomes for one individual and found that the likelihood of a hospital claim or claims totaling $1,000,000 or more to be approximately 7.1 out of every 100,000 lives.
(Also note that 5.9 trended upward at 6.5% per year from 2014 to 2016 is 5.9 x (1.065) x (1.065) = 6.7 million-dollar claims for 2016 estimated. See 2014 Million Dollar Claims: 5.9 per 100,000.)
* Weiss AJ (Truven Health Analytics), Elixhauser A (AHRQ). Overview of Hospital Stays in the United States, 2012. HCUP Statistical Brief #180. October 2014. Agency for Healthcare Research and Quality, Rockville, MD. http://www.hcup-us.ahrq.gov/reports/statbriefs/sb180-Hospitalizations-United-States-2012.pdf.