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Accountable care organizations (ACOs) have become Medicare's dominant care model because policy makers believe that ACOs will improve the quality and efficiency of care for chronic conditions. Depression and anxiety disorders are the most prevalent and undertreated chronic mental health conditions in Medicare. Yet it is unknown whether ACOs influence treatment and outcomes for these conditions. To explore these questions, this longitudinal study used data from the 2016-19 Medicare Current Beneficiary Survey, linked to validated depression and anxiety symptom instruments, among diagnosed and undiagnosed fee-for-service Medicare patients with these conditions. Among patients not enrolled in ACOs at baseline, those who newly enrolled in ACOs in the following year were 24 percent less likely to have their depression or anxiety treated during the year than patients who remained unenrolled in ACOs, and they saw no relative improvements at twelve months in their depression and anxiety symptoms. Better-designed incentives are needed to motivate Medicare ACOs to improve mental health treatment.

Paid sick leave provides workers with job-protected paid time off to address short-term illnesses or seek preventive care for themselves and their family members. We studied the impact of mandatory paid sick leave at the state level on emergency department (ED) visit rates, using all-payer, longitudinal ED data from the Healthcare Cost and Utilization Project for the period 2011-19. We found that state implementation of paid sick leave mandates was associated with a 5.6 percent reduction in the total ED visit rate relative to the baseline, equivalent to 23 fewer visits per 1,000 population per year. The reduction was concentrated in Medicaid patients. Some of the largest reductions were ED visits related to adult dental conditions, adult mental health or substance use disorders, and pediatric asthma. Mandatory paid sick leave may be an effective policy lever to reduce excess ED use and costs.

Establishing care with primary care and specialist clinicians is critical for Medicare beneficiaries with complex care needs. However, beneficiaries with disabilities may struggle to access ambulatory care. This study uses the 2015-17 national Medicare Current Beneficiary Survey linked to claims and administrative data to explore these questions. Medicare beneficiaries (ages 21-64) with disabilities were 119 percent more likely to report difficulty accessing care and were 33 percent and 49 percent more likely to lack annual clinician evaluation and management visits for primary and specialty care, respectively, than those without disabilities. Beneficiaries (ages 21-64) with disabilities also had 42 percent, 67 percent, and 77 percent higher likelihood of having all-cause, nonemergent, and preventable emergency department (ED) visits. Furthermore, people with both a disability and a lack of specialist evaluation and management visits also had 21 percent, 48 percent, and 64 percent increased likelihood of all-cause, nonemergent, and preventable ED visits. Barriers to accessing ambulatory care may be a key contributor to the reliance of Americans with disabilities on ED services.

The Institutions for Mental Diseases (IMD) exclusion prohibits use of federal Medicaid funds to treat enrollees ages 21-64 in psychiatric residential treatment facilities that have more than sixteen beds. In 2015 the federal government created a streamlined application pathway for state waivers of this rule to allow Medicaid coverage for substance use disorder (SUD) treatment in residential facilities. Nine states received IMD waivers during the period 2015-18. Using data from the 2010-18 National Survey of Substance Abuse Treatment Services, we examined changes in residential and outpatient SUD treatment facilities' acceptance of Medicaid and other types of health coverage, as well as self-pay arrangements and provision of charity care, after states' adoption of IMD waivers. Acceptance of Medicaid increased 34 percent at residential treatment facilities and 9 percent at intensive outpatient facilities two years after waiver implementation. Delivery of medications for opioid use disorder did not increase in residential facilities post waiver but did increase to some extent in outpatient facilities. Our findings suggest that IMD waivers may be an important tool for advancing access to a full continuum of SUD treatment for Medicaid enrollees.

Self-help groups and medications (buprenorphine, methadone, and naltrexone) both play important roles in opioid addiction treatment. The relative use of these two treatment modalities has not been characterized in a national study. Using national treatment data, we found that self-help groups were rarely provided in conjunction with medication treatment: Among all adult discharges from opioid addiction treatment in the period 2015-17, 10.4 percent used both self-help groups and medications, 29.2 percent used only medications, 29.8 percent used only self-help groups, and 30.5 percent used neither self-help groups nor medications. Use of self-help groups without medication is most common in residential facilities, among those with criminal justice referrals, and among uninsured or privately insured patients, as well as in the South and West regions of the US. These subgroups may be important targets for future efforts to identify and overcome barriers to medication treatment and create multimodal paths to recovery.

People living in rural areas have worse health outcomes than their urban counterparts do. Understanding what factors account for this could inform policy interventions for reducing rural-urban disparities in health. We examined a nationally representative survey of Medicare beneficiaries with one or more complex chronic conditions, which represented 61 percent of rural and 57 percent of urban Medicare beneficiaries. We found that rural residence was associated with a 40 percent higher preventable hospitalization rate and a 23 percent higher mortality rate, compared to urban residence. Having one or more specialist visits during the previous year was associated with a 15.9 percent lower preventable hospitalization rate and a 16.6 percent lower mortality rate for people with chronic conditions, after we controlled for having one or more primary care provider visits. Access to specialists accounted for 55 percent and 40 percent of the rural-urban difference in preventable hospitalizations and mortality, respectively. Medicare should consider interventions for rural beneficiaries who lack access to specialist care to reduce rural-urban disparities in health outcomes.

Hospitalizations for ambulatory care-sensitive conditions indicate barriers to care outside of inpatient settings. We found that Medicaid expansions under the Affordable Care Act were associated with meaningful reductions in these hospitalizations, which suggests the potential of Medicaid expansions to reduce the need for preventable hospitalizations in vulnerable populations and produce cost savings for the US health care system.

Comprehensive mandates for prescription drug monitoring programs (PDMPs) require state-licensed prescribers and dispensers both to register with and to use the programs in most clinical circumstances. Such mandates have the potential to improve providers' participation and reduce opioid-related adverse events. Using Medicaid prescription data and hospital utilization data across the US in the period 2011-16, we found that state implementation of comprehensive PDMP mandates was associated with a reduction in the opioid prescription rate from 161.47 to 147.07 per 1,000 enrollees per quarter, a reduction in the opioid-related inpatient stay rate from 97.50 to 93.34 per 100,000 enrollees per quarter, and a reduction in the opioid-related emergency department (ED) visit rate from 74.60 to 61.36 per 100,000 enrollees per quarter. Our estimated annual reductions of approximately 12,000 inpatient stays and 39,000 ED visits could save over $155 million in Medicaid spending, a fact that deserves policy attention when states attempt to strengthen and refine PDMPs to better tackle the opioid crisis.

Work requirements condition Medicaid eligibility on completing a specified number of hours of employment, work search, job training, or community service. Little is known about how behavioral health and other chronic health conditions intersect with employment status among Medicaid enrollees who may be subject to work requirements. Using data from the National Survey on Drug Use and Health for the period 2014-16, we found that people with behavioral health and other chronic health conditions were more likely to be enrolled in Medicaid and subject to work requirements than those without any identified health conditions. Furthermore, among Medicaid enrollees, those with behavioral and other health conditions were also less likely to have worked twenty hours or more in the past week (and thus be more unlikely to meet work requirements). Our findings suggest that people who may be subject to the requirements have an elevated prevalence of behavioral and other chronic health conditions. If work requirements are to be a continued piece of Medicaid policy, policy changes must also be adopted to ensure that Medicaid covers a full continuum of evidence-based behavioral health services and that Medicaid enrollees with work-limiting conditions are given reasonable accommodations and exemptions.

Office-based visits involving a buprenorphine prescription increased significantly among primary care and specialist physicians from 2006 to 2014. The growing involvement of nonpsychiatry physicians in buprenorphine prescribing has the potential to provide better access to care for people with opioid use disorders.

Prescription drug monitoring programs are promising tools to use in addressing the prescription opioid epidemic, yet prescribers' participation in these state-run programs remained low as of 2014. Statutory mandates for prescribers to register with their state's program, use it, or both are believed to be effective tools to realize the programs' full potential. Our analysis of aggregate Medicaid drug utilization data indicates that state mandates for prescriber registration or use adopted in 2011-14 were associated with a reduction of 9-10 percent in population-adjusted numbers of Schedule II opioid prescriptions received by Medicaid enrollees and amounts of Medicaid spending on these prescriptions. This effect was largely associated with mandates of registration, which were comprehensive in all adopting states, and not with mandates of use, which were largely limited in scope or strength before 2015. Our findings support the use of mandates of registration in prescription drug monitoring programs as an effective and relatively low-cost policy. Future research should further assess the value of strong mandates of use to ensure safer and more appropriate prescribing of opioids., (Project HOPE—The People-to-People Health Foundation, Inc.)

Expansions of eligibility for Medicaid under the Affordable Care Act may have increased the number of Medicaid drug prescriptions. However, the expansions did not drive Medicaid spending on prescription drugs overall in 2014., (Project HOPE—The People-to-People Health Foundation, Inc.)

Previous research has associated declines in health care resources such as hospitals and trauma centers with communities' racial composition. However, little is known about changes in the substance use disorder treatment infrastructure in recent years and the implications for black communities. We used data for the period 2002-10 from the National Survey of Substance Abuse Treatment Services to describe changes in the supply of public and private outpatient facilities for substance use disorder treatment, and to determine whether these trends had implications for the geographical availability of these facilities in counties with high percentages of black residents. During the study period the number of publicly owned facilities declined 17.2 percent, whereas the number of private for-profit facilities grew 19.1 percent. At baseline, counties with very high percentages of black residents (that is, more than one standard deviation above the mean) were more likely than counties with less than the mean percentage of black residents to be served by public facilities and were thus disproportionately affected by the overall decline in public facilities. Future research should examine the effect of expanding eligibility for Medicaid on the supply of substance use disorder treatment facilities across diverse communities., Competing Interests: The authors have no financial interests and no conflicts of interest to disclose., (Project HOPE—The People-to-People Health Foundation, Inc.)