Will Medicaid's "great unwinding" when the PHE ends trigger a "great uninsuring"?

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During the pandemic, from February 2020 to May 2022, Medicaid enrollment increased by 18 million, or 29%, according to administrative data that CMS collects from states. That's mainly because of a moratorium on disenrollments that began in March 2020 and has yet to end. The moratorium will end when the federal government declares an end to the  Public Health Emergency, which will happen in mid-January 2023 at the earliest (the PHE has been extended repeatedly in 3-month increments). 

As noted in my last post, the disruption that may be triggered by the resumption of state "redeterminations" of Medicaid enrollees' eligibility, and subsequent disenrollment of some, is a focus of considerable angst -- and preparations, in states where Medicaid personnel are committed to keeping as many people insured as possible, to proceed with due deliberation and compassion. The Urban Institute has estimated that 15 million people may be disenrolled over the course of a year, the time period that CMS has asked states to devote to clearing the "redetermination" backlog. The Kaiser Family Foundation (KFF) estimates somewhat more modest losses, in a range from 5.3 million to 14.2 million.

This week the Census Bureau released its annual report on health insurance coverage in the United States. Based on the annual supplement to the Current Population Survey, the report shows a more modest increase in Medicaid enrollment from 2020 to 2021 -- 0.9% -- than CMS's administrative data would indicate.  According to CMS, Medicaid and CHIP enrollment increased by 6.6 million from December 2020 to December 2021. That's about 2% of the population.

The Census Bureau also released a second report, spotlighting health insurance changes over two years, and based on the American Community Survey. which interviews people throughout the year about their current insurance status (the CPS, conducted early in the year, asks respondents if they were insured at any point in the past year).  The ACS also shows a gap between Medicaid enrollment gains as reflected in administrative data compared to the survey data. According to the report, the percentage of the population insured by Medicaid increased by 1.3% over two years, from 2019 to 2021 (based, again, on surveys conducted throughout each year). The administrative data records an increase of 11.7 million enrollees from June 2019 to June 2021. That's about 3.5% of the population.

An analysis of the ACS data by KFF attempts to explain this gap. The explanation suggests to me that the disenrollments that will begin at the end of the PHE may not be as disruptive as "15 million disenrolled" might indicate -- at least in states that work in good faith and with due diligence to establish contact with all enrollees, accurately determine their status, and help them consider their options.  My emphasis via yellow highlight below (the bolded subhead is in the original):

Democrats have twelve years of healthcare accomplishment to run on

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Chuck Schumer tours Adirondack Medical Center

HuffPost reports that Priorities USA is urging Democrats to tout recent healthcare achievements:

In a memo set to be published Wednesday, Priorities USA says the most popular achievements of President Joe Biden’s tenure are giving Medicare the power to negotiate prescription drug prices, capping the price of insulin and continuing expanded subsidies for the Affordable Care Act.

Priorities USA recommends focusing on these issues while also attacking Republicans for working to restrict abortion rights in the wake of the Supreme Court decision overturning Roe v. Wade.

Amen. And below those top lines -- the healthcare provisions in the Inflation Reduction Act passed this month -- Democrats should also tout a long tail of recent accomplishments that have improved healthcare affordability and access. Their claim to be the party of healthcare bears not only recent but cumulative weight.

Healthcare was a potent issue for Democrats in 2018, with Republicans fresh off their failed attempt to repeal the ACA's core programs in 2017.  Because they failed, the ACA Medicaid expansion and subsidized marketplace survived to catch the newly uninsured when more than 20 million Americans lost their jobs in the first onslaught of the COVID-19 pandemic. 

U.S. uninsured rate hits an all-time low; Biden's HHS takes a victory lap; xpostfactoid claims prepostfactoid credit

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Record broken!

Biden's HHS took something of a victory lap yesterday, announcing that the national uninsured rate -- 8.0% for all ages --  was at an all-time low in the first quarter of 2022. Since the fourth quarter of 2020, the uninsured rate has dropped by 2.7 percentage both for ages 18-64 and for children, according to the ASPE* brief.

The brief is based on quarterly updates from the National Health Interview Survey. Those updates are notoriously bouncy, but the change over the time frame selected is clearly statistically significant. 

The brief asserts: "These gains in health insurance coverage are concurrent with [mustn't claim causality, now...] the implementation of the American Rescue Plan’s enhanced Marketplace subsidies, the continuous enrollment provision in Medicaid, several recent state Medicaid expansions, and substantial enrollment outreach by the Biden-Harris Administration in 2021- 2022."

I must note that I've been something of a canary in the coal mine on this front, first speculating that we might be approaching an uninsured low in April 2021; wondering whether the 2021 Special Enrollment Period coupled with the ARPA subsidy boosts might have got us there by late August 2021; and parsing the NHIS quarterly data in light of the 2022 marketplace enrollment surge in January 2022.

Ultimately, I noted in the January post, the enrollment math, if not the survey data, told a fairly simple story:

On climbing out of the ACA coverage gap

The latest quarterly estimates of health insurance coverage from the National Health Interview Survey (NHIS) show a drop in the uninsured rate for all ages from 9.7% in Q2 2021 to 8.9% in Q3. That's probably not statistically significant. The confidence intervals largely overlap;  quarterly rates bounce around quite a bit; they are "published prior to final data editing and final weighting"; and response rates have been affected by the pandemic.

That said, the changes among adults aged 18-64 in the lowest income segment -- those with incomes below the Federal Poverty Level -- may be worth pausing over:

The ACA as pandemic safety net, Chapter 2 (2021)

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As xpostfactoid is devoted mainly to tracking the implementation and metamorphosis of the Affordable Care Act, for the past two years I've focused mainly on ACA programs' performance as a safety net during the pandemic, as millions of people lost job-based health coverage for varying lengths of time. 

In 2020, the uninsured rate appears to have remained basically flat, though pandemic-related surveying challenges rendered Census and NHIS findings somewhat tentative. In 2021, the uninsured rate may actually prove to have downticked a bit, once the data is in. By kludgy American standards, the health insurance safety net -- Medicaid and the ACA marketplace -- have performed well, bolstered by several doses of emergency legislation and administrative action:

• The Families First Act, which added six percentage points to the federal government's share of Medicaid costs -- contingent on states pausing Medicaid "redeterminations" and disenrollments for the duration of the COVID-19 emergency (still in effect).
• Belated ACA Medicaid expansions that went live in Idaho, Utah and Nebraska in 2020 and in Oklahoma and Missouri in 2021.

NHIS: No shift from private to public insurance?

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The annual early release estimates from the National Health Interview Survey (NHIS) came out today. The NHIS recorded a decrease in the uninsured rate for all ages from 2019 to 2020, from 10.3% to 9.7%, but deemed the change statistically insignificant. Among adults aged 18-64, the uninsured rate  dropped from 14.7% to 13.9% -- also deemed not significant. Similarly, the Urban Institute survey report that I wrote about last week found essentially no change in the uninsured rate from March 2019 to April 2021 -- but also recorded a statistically insignificant drop. 

Directionally, as I noted last week, most surveys, including the Census's experimental Household Pulse Survey, point to a modest drop in the uninsured population during the pandemic. Big picture: huge gains in Medicaid enrollment, driven largely by a pause in disenrollments effectively mandated by pandemic relief legislation, appear to have outstripped drops in access to employer-sponsored insurance (ESI), which according to various sources fell less than the massive job losses triggered by the pandemic might have led one to expect. But there are a lot of moving parts that may have canceled one another out. 

Is the uninsured rate flat since 2019, or down a bit?

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See 8/31 update from NHIS survey at bottom

The Urban Institute, in an analysis of results from its own ongoing Heath Reform Monitoring Survey, found that the uninsured rate among adults aged 19-64 did not change significantly from March 2019 to April 2021. 

That's at least a backhanded tribute to the U.S.'s kludgy health insurance safety net as bolstered by the Affordable Care Act. Big picture: in Urban's estimate, as a result of the pandemic, employer-sponsored insurance  fell by 3 percentage points (from 65% to 62.3%) in the survey period, while insurance through public programs (mainly Medicaid) increased by 4 percentage points (from 13.6% to 17.5%). 

You could read these results as a paean to the ACA Medicaid expansion (which Republicans almost repealed in 2017). In states that have expanded Medicaid, Urban found that the uninsured rate actually dropped two percentage points for people with incomes below 138% FPL, the Medicaid eligibility threshold. According to CMS, total Medicaid enrollment (including children) increased by 11 million -- 15.6% -- from February 2020 to March 2021.  Enrollment among adults rendered eligible by the expansion increased by about double that rate.

Urban recorded a much more modest and ambiguous impact for the ACA marketplace -- though the huge enrollment surge during the emergency Special Enrollment Period open from February 15 through August 15 of this year, turbo-charged by subsidy increases enacted in the American Rescue Plan, which appeared on HealthCare.gov on April, was mainly missed by Urban's study period. I'll return to that in a bit.

I speculated in May that the U.S. uninsurance rate might be at an all-time low, powered by huge gains in Medicaid enrollment, significant gains in marketplace enrollment, and relatively modest losses in employer-sponsored insurance during the pandemic. My methods (and math) are far less sophisticated than Urban's, and this is not to question their results (no source ever has a really complete picture of insurance in the U.S.).  That said, a few comments and caveats below.

Obamacare enrollment in nonexpansion states is up 26% year-over-year and 41% since June 2019 (estimate)

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Not to indulge in monomania, I want to offer a clearer snapshot than previously of really major marketplace enrollment gains in the pandemic period in states that had not enacted the ACA Medicaid expansion as of June 30 of this year.  As the uninsured rate in the nonexpansion states was nearly double the rate in expansion states as of 2019 (15.5% vs. 8.3%),  particularly rapid enrollment growth in those states -- most of it at low incomes -- is having a significant impact where help is most needed.

Every June, CMS publishes "effectuated" (i.e., paid-up) enrollment in each state as of February of that year. Those reports also break out monthly enrollment by state in the year prior. This year, that information is supplemented by monthly reports on off-season enrollment, stimulated this year by an emergency Special Enrollment Period (SEP), running from February 15 through August 15 in the 36 states using HealthCare.gov, which is the functional equivalent of a second Open Enrollment Period (the 15 states that run their own exchanges have also opened emergency SEPs.) The SEP reports provide enough data, or so I assume below, to estimate effectuated enrollment through June 30 of this year.

By my estimate, enrollment in 13 nonexpansion states as of June 30 -- excluding Wisconsin, for reasons discussed below -- is up 26% year-over-year, and 41% since in June 2019. That's a two-year increase of 1.74 million.  Enrollment is up by more than 50% since June 2019 in Texas, Georgia and Mississippi. It's up by almost 500,000 in Texas and by more than 650,000 in Florida.

How much will free benchmark silver plans boost ACA marketplace enrollment in nonexpansion states?

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An Urban Institute brief estimates that if the premium subsidy increases for the ACA marketplace enacted through 2022 in the American Rescue Plan are made permanent, marketplace enrollment will increase by 5.1 million, and the uninsured population will decrease by 4.2 million.

That's somewhat higher than the increase of 3 million that KFF's Cynthia Cox floated to me as a soft estimate. A lot depends on the effectiveness of outreach and possible future improvements to the enrollment process, Cox stressed. Both estimates are pretty modest, given the magnitude of the subsidy boost, outlined below. By KFF's estimate, about 10.6 million uninsured are eligible for subsidies under the new schedule.

Here I want to focus on the category* in which Urban foresees minimal change: enrollment at 100-138% FPL in states that have refused the ACA Medicaid expansion. In those states, eligibility for marketplace subsidies begins at 100% FPL, whereas in expansion states, adults** with incomes up to 138% FPL are eligible for Medicaid. Under ARPA, benchmark silver coverage is free at this income level, and in fact up to 150% FPL. And up to that threshold, Cost Sharing Reduction boosts the actuarial value of the free silver plan to 94%, well above the average for employer-sponsored coverage. According to CMS, the average deductible for silver plans at this income level is just $69 in HealthCare.gov states (e.g., all nonexpansion states). While even modest out-of-pocket costs appear to be a barrier at near-poor incomes -- Medicaid logs higher satisfaction ratings than high-CSR marketplace coverage in surveys -- this is a very valuable free benefit.

The Urban Institute analysis estimates that ARPA will reduce the uninsured population at incomes below 138% FPL by only 312,000. The authors do not provide an estimate of the subsidy-eligible population at 100-138% FPL -- but as I noted in early April, the Kaiser Family Foundation does provide such estimates for 12 nonexpansion states.*** In those 12 states together, 1.8 million people with incomes in the 100-138% FPL range were uninsured in 2019, according to KFF's estimate.  

The ACA as pandemic safety net

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In the New York Times Upshot, Margot Sanger-Katz, Sarah Kliff and Quocktrung Bui report that the health insurance safety net as bolstered by the ACA, patchy though it is, appears to have held the uninsured rate close to steady during the pandemic months. In brief: Medicaid enrollment in the ACA expansion category is up more than 20% since February; ACA marketplace enrollment in 36 HealthCare.gov states is up 6.6% for 2021, and losses of employer-sponsored health insurance appear relatively modest.

I have been tracking these developments as they unfold. Some of the posts below corroborate the core findings cited in Upshot, and some supplement those findings. In reverse chronological order:

• ACA marketplace enrollment was already up by more than 6% year-over-year by June 2020. 

• Medicaid enrollment among those rendered eligible by the ACA Medicaid expansion is up more than 20% since February and likely exceeds 18 million.

• In states that have so far refused to enact the ACA Medicaid expansion, the ACA marketplace has picked up some slack: in nonexpansion states, marketplace enrollment is up 10% in 2021.

ACA Medicaid expansion enrollment continues to swell as pandemic surges

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 As our woes show no sign of abating -- 120,000-plus new Covid-19 cases per day, a million new jobless claims per week -- neither does Medicaid expansion enrollment. This part of the ACA is providing a vital safety net. The sampling below (states that have reported expansion category enrollment through October) indicates that enrollment growth did not slow in October.

How representative is the sample? Well, August growth is about 1 percentage point higher in this sample than in the larger (18-state) sample I posted for that month. California, where Medicaid enrollment has been almost flat in pandemic months, drags down the all-state rate of increase by probably another 2 percentage points. I am pretty confident that expansion-category enrollment growth since February tops 20% nationally. For more about my various assumptions, see this post (and this September update).

Pandemic Medicaid expansion enrollment in 12 states
February thru October 2020

 Idaho increase through August is estimated at a rate comparable to Sept-Oct increase.

Job losses and the uninsured rate in the pandemic: A one-state snapshot

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Let's try a somewhat ambiguous one-state snapshot -- in New Jersey, my home state --  of the extent to which ACA programs may have blunted an increase in the uninsured population during the months when Covid-19 triggered huge increases in unemployment. 

According to the New Jersey Department of Labor, job losses due to the pandemic peaked at about 835,500 and stood at 426,110 as of August. Estimates of the ratio between the number of people losing jobs and the number losing insurance vary quite a bit, and the ratio probably varies quite a bit by state, depending on the types of jobs lost. The pandemic created novel conditions, in which a fair number of workers were furloughed and were able to keep their job-based insurance, at least for a while. 

In New Jersey, as in most states that enacted the ACA Medicaid expansion, Medicaid is the primary safety net for the newly uninsured.  Enrollees rendered eligible by the expansion -- adults with incomes up to 138% of the Federal Poverty Level -- are driving rapid growth in Medicaid enrollment in the state. Here's the story since February: 

Medicaid Enrollment Growth in New Jersey in the Pandemic

Coverage group	Feb 2020	Sept 2020	Increase Feb-Sept	% increase Feb-Sep
ACA expansion adults	510,850	597,002	86,152	16.9%
Non-ABD children	773,544	835,543	61,999	8.0%
All Medicaid	1,682,621	1,853,928	171,307	10.2%

Source: NJ FamilyCare Monthly Enrollment Statistics

How many newly uninsured? Families USA and the feds paint different pictures

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Families USA released a report this week estimating that 5.4 million adults newly unemployed by the pandemic as of May are also becoming uninsured.

The estimate is based on data and analyses concerning  1) the number of people who have lost jobs (BLS), 2) the likely percentage of newly unemployed who have lost access to health insurance, and 3) the percentage of newly unemployed in the ACA era (2014-2018) who have found other insurance, including Medicaid and marketplace (Urban Institute).

The analysis boils down to a fairly simple equation: about a quarter of those who lose jobs do not find their way to job-based insurance through a family member, Medicaid, marketplace coverage or COBRA. Much higher percentages of the newly unemployed are estimated to become uninsured in states that have refused the ACA Medicaid expansion (42.5%) than in expansion states (22.6%).

5.4 million uninsured adults equates to about a 2.6 percentage point increase in the uninsured rates for Americans aged 18-64.  Based on the most recent National Health Interview Survey (Jan-June 2019), that would suggest an uninsured rate of about 16.3% for ages 18-64. As I've noted recently, more immediate survey data seems to indicate less severe increases in the uninsured population. A Commonwealth Fund survey of about 2300 adults conducted May 13 through June 2 seemed to indicate that a bit less than 2% of the population had recently become uninsured.

More strikingly, the experimental new Household Pulse Survey updated weekly by the CDC -- a joint project of the Census Bureau and National Center for Health Statistics -- shows comparatively little movement since its launch in the week of April 23, when it recorded a national uninsured rate of 12.6%  for ages 18-64 -- more than a percentage point lower than the 2019 NHIS estimate. The weekly updates have been quite volatile but on the whole have ticked upward, reaching 13.5% in the week of June 25 (there'll be another update tomorrow).  Estimates for individual states, shown below, average three percentage points higher in Pulse than in the FUSA study, and vary widely.

Loss of health insurance looks modest so far, but it's early days

The Covid-19 pandemic has delivered an unprecedented shock to the U.S. economy, though its duration remains to be seen. Of the 21 million unemployed as of the end of May, 15.3 million were on temporary layoff, according to the Bureau of Labor Statistics. As of the end of May, the BLS reported an unemployment rate of 13.3%, while acknowledging that the rate would be 3 points higher if those classified as employed but absent from work were counted as unemployed, as they should have been (see pg. 6 here).

How many of the newly unemployed will lose access to health insurance? The Urban Institute and the Kaiser Family Foundation both put out estimates in May. At 15% unemployment, Urban forecast that between 17.7 million and 30.1 million would lose access to employer-sponsored insurance, and that about 29% of these people would become uninsured, the rest (71%) enrolling in Medicaid or the ACA marketplace.  Kaiser estimated that the number of people losing access to employer-sponsored insurance (ESI) would be about 87% of total job losses*, and that 79% of those who lost ESI would be eligible for Medicaid or subsidized marketplace insurance. Urban pegged the rise in the uninsured population at 5.2-8.5 million; Kaiser, at about 5.5 million.

What do we know about the impact of job losses on the uninsured rate so far? We do have data. The CDC is reporting results weekly from a Census Bureau "demonstration project," the Household Pulse Survey, a quick-and-dirty web survey introduced with a host of caveats.  The Commonwealth Fund, meanwhile, interviewed 2,271 adults about their health insurance status between May 13 and June 2.

Medicaid enrollment in a pandemic: The case of Kentucky

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Update (6/9/20) at bottom, with June enrollment numbers and more information re enrollment outreach in KY.

Of the tens of millions of Americans likely to lose access to health insurance as a result of job losses triggered by the Covid-19 pandemic, the Urban Institute estimates that about half -- 8.2 million in the most conservative of several scenarios -- will enroll in Medicaid. Kentucky appears to have gotten off to a comparatively fast start, though state healthcare advocates see a need for more intense outreach.

Medicaid enrollment in the state has increased by more than 100,000 (8%) since February, from 1.32 million to 1.42 million, according to the state's monthly membership tally.  In 2019, enrollment from March to May was flat, down less than 1%. At 20% unemployment, which we're likely to reach in the next jobs report, between 336,000 and 397,000 Kentuckians are likely to have lost access to job-based insurance, according to the Urban Institute estimate. Urban foresees Medicaid enrollment in Kentucky increasing by between 208,000 and 228,000 thousand if that unemployment rate holds for some months.

Dustin Pugel, a senior policy analyst at the Kentucky Center for Economic Policy, credits Governor Andy Beshear, elected just last November, with stimulating and facilitating crisis Medicaid enrollment.  During his daily televised, widely watched Covid-19 briefings, Beshear regularly starts with ten steps for fighting the virus, and, Pugel says, "One of them is signing up for benefits. Medicaid is mentioned every single time."

Uninsurance goes upscale: The Census's Health Insurance Coverage Update for 2018

Yesterday the Census Bureau* released its health insurance estimates for 2018. The top line showed a rise in the uninsured population of 1.9 million, or 0.5% -- the first increase since the ACA's main programs launched.

Disturbingly, the number of uninsured children increased by 425,000, or 0.6%, raising children's uninsured rate to 5.5%. That spike would appear to be due mainly to a drop in Medicaid coverage, given that  Medicaid and CHIP coverage for children was down 1.2%; and the overall percentage of children with public health insurance dropped 0.8%, while the percentage of children with private health insurance ticked up 0.2%. There was also, however, a sharp spike in the uninsured rate among children in households with incomes over 400% of the Federal Poverty Level (FPL), from 1.9% in 2017 to 2.6% in 2018 -- accounting for almost half of the increase in uninsured children.

Folks at Georgetown University and the Center for Budget and Policy Priorities will probably dive  into the spike in uninsured children, as they have been doing for at least a year. Here I just want to throw some sidelights on the Census numbers generally.

1. Affluent uninsured population spikes. Notwithstanding a drop of 2 million  (0.7%) in Medicaid enrollment, the sharpest increases in the uninsured were at high incomes. At 300-399% FPL, the insured rate dropped a full percentage point, from 92.9% to 91.9%, and at over 400% FPL, the rate dropped 0.8%, from 97.3% to 96.6%. Together, these two income groups account for 55% of the population. Particularly striking, the number of uninsured at incomes over 300% FPL increased 23.8% (from 6.631 million in 2017 to 8.215 million in 2018).  The spike in uninsured children at high income levels seems congruent with this drop.

The ACA as recession insurance

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The ACA private plan marketplace was always and obviously under-subsidized. A healthy young adult earning, say, $31,000 per year is not likely to feel enthusiastic about paying $220 per month for a benchmark silver health plan with a deductible averaging just over $4000 (albeit often with many services not subject to the deductible).  It's true that if this person were insured through her employer, her premium for somewhat better insurance would average $575 per month and consume 22% of her pre-tax compensation. But with the employer contributing 83% of that premium on average, most people don't recognize how much of their compensation is eaten up by premiums.

Costs in excess of what many people consider affordable is a principle reason that enrollment in the exchanges, averaging about 10 million per month, is less than half what the Congressional Budget Office forecast in 2009.  That said, the ACA marketplace has always faced other headwinds. One is the well-documented one of Republican sabotage (through Congress, from 2010 forward, and via Trump's HHS as well since 2017).  A second is unbroken job growth since mid-year 2009, reducing the number of people who need to look to the individual market for health insurance. From March 2010 through January 2019, the economy added just shy of 21 million jobs.

Conversely, the marketplace -- along with the ACA Medicaid expansion -- stands in reserve as a shock absorber when the next recession or financial crisis hits.

Drop in low income uninsured is partly due to drop in low income population

In 2015, I noted that Democrats had paid in political blood for devising a health reform scheme that primarily benefited people in the lower third of the national income distribution  (those with incomes below 200% of the Federal Poverty level), where more than half of the country's uninsured were concentrated pre-ACA.

Chance led me this morning to take a bird's eye view of how the income distribution of the uninsured changed from 2013 (pre-ACA) to 2017. This snapshot is based on the Census Bureau's annual September report, Health Insurance Coverage in the United States, for 2014 and 2017.

The percentage of the uninsured in the lowest income brackets has shrunk considerably. But that's in part because the percentage of the total population in those brackets has also shrunk.  In 2013, 39% of the population and 59% of the nation's uninsured were in households with incomes below $50k. In 2017, 49% of the uninsured and 34% of the total population were in households with incomes below that threshold.

Here is the breakout by income group.

Obama's ACA sabotage claims: Checking the AP fact-checkers

Today Associated Press fact checkers Calvin Woodward and Christopher Rugaber spank Obama for claiming that Republican sabotage of the ACA "has already cost more than 3 million Americans their health insurance.' Okay, the claim is debatable, but the fact checkers need a fact check. Or at least some qualification.

Woodward and Rugaber allege that "Obama is cherry picking survey results" and blaming Republicans for all the ACA marketplace's problems, which had begun before the Trump administration took over. Both true to a degree. But...

The dueling surveys are Gallup-Sharecare, which found that the uninsured rate among adults had upticked 1.3% by the end of 2017, which translates to 3.2 million fewer insured, and the CDC's Nation Health Interview Survey (NHIS), which found the uninsured population essentially unchanged from Q1 2017 to Q1 2018. Obama was relying on Gallup. For sure, that suited his purposes. But there is some corroborating evidence as to the effects of turmoil in the ACA marketplace -- largely though not entirely as a result Republican sabotage.

AP notes that marketplace enrollment dropped by "only" about 900,000 in 2018, the year that Republican-induced disruptions* took full effect. That's true -- but those disruptions triggered a massive premium spike in 2018 that devastated off-exchange enrollment in ACA-compliant plans -- that is, among those who don't qualify for ACA subsidies and so bore the full brunt of the premium increases.

According to the Kaiser Family Foundation, off-exchange enrollment dropped by 2.3 million, or 38%, from the first quarter of 2017 to the first quarter of 2018. On-exchange enrollment was also down by a couple of hundred thousand (here I take mild issue with Kaiser, which chose not to correct a CMS reporting error in 2017). Enrollment would have been depressed still further -- by several hundred thousand -- if not for the paradoxical effect of Trump's cutoff of direct federal funding for Cost Sharing Reduction (CSR).  When insurers priced CSR mostly into silver plan premiums, that move alone drove premiums up by double digits for unsubsidized enrollees, but also created discounts  in bronze and gold plans for the subsidy-eligible that boosted enrollment among the more affluent subsidized.

NHIS puts individual market angst in perspective

The Kaiser Family Foundation reports that individual market enrollment dropped by about 2 million from the first quarter of 2017 to the first quarter of 2018. Medicaid/CHIP enrollment is down by about 1 million in the same period, to 73.8 million in April of this year (preliminary count*).

Together those reported drops, if accurate, would account for about 1% of the U.S. population under age 65.  Yet according to the preliminary results of the National Health Interview Survey (NHIS) for the first quarter of 2018, released this week, the uninsured population has not changed significantly since 2017.  In fact, the percentage of the total population that is uninsured has downticked from 9.1% to 8.8%, and among the under-65 population from 10.7% to 10.3%, though those changes are not deemed statistically significant.