Recently I
noted that 2018 enrollment losses among subsidized buyers on HealthCare.gov were concentrated at lower income levels, i.e., 100-200% of the Federal Poverty Level(FPL). At the upper range of subsidy-eligible incomes, 200-400% FPL, enrollment actually rose slightly -- or more precisely, dropped very slightly at 200-300% FPL, and rose significantly at 300-400% FPL.
The reason is not hard to find. Discounts in bronze and gold plans generated by Trump's cutoff of direct reimbursement to insurers for Cost Sharing Reduction (CSR) subsidies, available only with silver plans, made marketplace offerings more attractive to those in the 200-400% FPL range than in past years (see note below for an explanation of how this worked). For enrollees in the 100-200% FPL range, in contrast, CSR remained strong enough to outweigh those new discounts in other metal levels, so the marketplace value proposition remained more or less status quo ante. On HealthCare.gov, the percentage of enrollees in the 100-150% FPL income range who selected silver plans actually rose slightly, to from 89% to 90%, while at 150-200% FPL silver selection shrank fairly modestly, from 83% to 78%.
For enrollees in the 200-400% FPL range, improved affordability in metal levels other than silver seems to have largely offset the effects of a shortened enrollment period, radically reduced federal spending on marketing and enrollment assistance, confusion sewn by Trump's declaration that the ACA is dead, and pending repeal of the individual mandate (not effective until 2019 but very much in the news before and during open enrollment). The 7.5% enrollment drop at the 100-200% FPL income level shows the more or less full imprint of those factors.
California's ACA marketplace, Covered California, is an alternative universe where different results might have been expected. In California, the marketing commitment remained strong, plan designs are standardized, regulatory oversight and competition are robust, premium increases in the last two years were about half the national average, and a
highly structured silver loading strategy was put in place early and publicized. Consequently, effectuated enrollment on Covered California as of March 2018 is up 4% over March 2017, whereas enrollment in the country as a whole is
down 2%.* Off-exchange enrollment stayed steady in California, whereas it
dropped 20% nationally in 2017, according to CMS, and likely further in 2018, as unsubsidized enrollees bore the full brunt of premium hikes that reached about 50% in two years.
Nonetheless, subsidized enrollment in California shows a similar pattern to subsidized enrollment on HealthCare.gov. While the year-over-year change is better for California at every income level, showing improvement in all but one (150-200% FPL), the pronounced enrollment performance gap between those eligible for strong CSR and those who are not (and to whom gold and bronze discounts were therefore more consequential) more or less mirrors the gap in the HealthCare.gov.