Early this month the Congressional Budget Office released an updated
ACA baseline that once again reduced projected spending from 2015-2025, to general
celebration. Among the items forecast to cost less were Cost Sharing Reduction (CSR) subsidies that reduce deductibles and out-of-pocket costs for low income buyers. Projected CSR spending was forecast at $136 billion over ten years, down $11 billion from from a prior reduction forecast just this
January, which CBO based on data suggesting that more low-income buyers than HHS had previously expected were buying bronze plans "that minimize their monthly premium payments, even if the amounts they ultimately pay for health care (including out-of-pocket payments) exceed what they would pay under silver plans."
This particular line item is no cause for celebration. Those costs are simply being shifted to low-income buyers who fail to avail themselves of CSR by buying silver-level plans on the ACA exchanges.
CBO's latest reduced CSR forecast might float on a
raft of fresh data released by HHS on March 10 about 2015 enrollment in private health plans offered on ACA exchanges. The percentage of buyers choosing silver plans -- which must be purchased to access CSR -- is down a bit since 2014, from 69% to 67%, and the percentage of bronze plan buyers is up, from 20% to 22%. On healthcare.gov, among subsidy-eligible buyers, bronze plan selection rose from 15% in 2014 to 21% this year. That's not good, since bronze plans carry average per-person deductibles of over $5,000 and the vast majority of buyers on healthcare.gov, the federal exchange, have incomes under 250% of the Federal Poverty Level (FPL).
Bronze plan buyers with incomes under 250% FPL are leaving a valuable benefit on the table, as CSR attaches only to silver plans. CSR subsidies reduce deductibles and out-of-pocket expenses massively for those under 200% FPL, more weakly for those in the 200-250% FPL range.
As readers of this blog know, I have gone to considerable
effort to divine CSR takeup rates -- particularly for buyers under 200% FPL, for whom the benefit most strongly boosts the relative value of silver. Evidence has been fragmentary, as in the past HHS did not break out metal level selection by income band, though a handful of states did.
Now HHS has provided income level information, though not specific breakouts of metal level selection by income band. The data for the 37 states using healthcare.gov as I read it is a bit disappointing for two reasons: 1) silver plan selection among subsidy-eligible buyers went down from 2014-2015, and 2) silver selection among buyers eligible for CSR in the 37 states using Healthcare.gov is lower than I had inferred for buyers under 200% FPL -- about 81--83% rather than 88-90%. I had based that inference largely on 2014 data published by the state-run exchange in
New York, which seemed to me for reasons explained below likely to be comparable to healthcare.gov on this front, About half that difference is probably due to the uptick in bronze plan selection in 2015, the other half in differences between the New York market and that of the healthcare.gov states.
The numbers
In the 37 states using healthcare.gov in 2015, a (to me) astonishing 83% of buyers for whom HHS has income data had incomes under 250% FPL and so were eligible for CSR if they bought silver. (HHS has income data for 94% of buyers, 8.31 million out of 8.84 million. Larry Levitt of the Kaiser Family Foundation speculates that the "unknowns" likely earn too much to qualify for subsidies, an assumption adopted here. Hence that 83% (of 8.31 million) suggests 6.89 million buyers under 250% FPL.) 60% of all buyers, or 5.3 million, accessed CSR. That is, about 77% of CSR-eligible buyers (5.3m out of 6.9m) bought silver plans and so accessed CSR.