Long before the Cost Sharing Reduction (CSR) subsidies accessed by more than half of enrollees in the ACA marketplace became a political battleground zero, I was preoccupied with CSR as the marketplace's primary (and too limited) defense against underinsurance. In dozens of posts, I explored what leads people to accept or reject CSR, i.e. to buy or forego silver plans if they qualify for the benefit (as CSR is available only with silver plans). Among the most basic conclusions:
1. Although a large body of research suggests that health insurance shoppers often make the wrong choice when faced with relatively small tradeoffs between premium and out-of-pocket costs, a large majority of CSR-eligible marketplace enrollees make the right choice That is, they choose not to leave a large subsidy on the table, despite the fact that silver premiums can be a strain on income and bronze plans temptingly cheap. Over 80% of enrollees eligible for strong CSR -- i.e., enrollees with incomes below 201% of the Federal Poverty Level (FPL) -- choose silver plans.
2. CSR takeup declines in step with the weakening of the benefit at higher income levels, with a sharp drop at 201% FPL, where the benefit weakens almost to insignificance. Based on data released by CMS in July 2016, the chart below shows the takeup rates in the 38 states that used healthcare.gov in 2016. The rates are inflated by probably about 2 percentage points, for reasons explained in this post. The numbers attached to "Silver" under coverage level are the CSR-enhanced actuarial value of silver at each level.
CSR Takeup: HealthCare.gov states, 2016
1. Although a large body of research suggests that health insurance shoppers often make the wrong choice when faced with relatively small tradeoffs between premium and out-of-pocket costs, a large majority of CSR-eligible marketplace enrollees make the right choice That is, they choose not to leave a large subsidy on the table, despite the fact that silver premiums can be a strain on income and bronze plans temptingly cheap. Over 80% of enrollees eligible for strong CSR -- i.e., enrollees with incomes below 201% of the Federal Poverty Level (FPL) -- choose silver plans.
2. CSR takeup declines in step with the weakening of the benefit at higher income levels, with a sharp drop at 201% FPL, where the benefit weakens almost to insignificance. Based on data released by CMS in July 2016, the chart below shows the takeup rates in the 38 states that used healthcare.gov in 2016. The rates are inflated by probably about 2 percentage points, for reasons explained in this post. The numbers attached to "Silver" under coverage level are the CSR-enhanced actuarial value of silver at each level.
CSR Takeup: HealthCare.gov states, 2016
Income
range
|
CSR
coverage
level
|
Enrollees
in income
range
|
Enrollees
With
CSR
|
Takeup
Percent-
age
|
0-150% FPL
|
Silver94
|
3.64m
|
3.18m
|
87%
|
151-200% FPL
|
Silver87
|
2.21m
|
1.83m
|
83%
|
201-250% FPL
|
Silver 73
|
1.33m
|
866k
|
65%
|