Dataset Information

Reduced Cost-sharing for Preventive Drugs Preferentially Benefits Low-income Patients With Diabetes in High Deductible Health Plans With Health Savings Accounts.

ABSTRACT:

Background

High deductible health plans linked to Health Savings Accounts (HSA-HDHPs) must include all care under the deductible except for select preventive services. Some employers and insurers have adopted Preventive Drug Lists (PDLs) that exempt specific classes of medications from deductibles.

Objective

The objective of this study was to examine the association between shifts to PDL coverage and medication utilization among patients with diabetes in HSA-HDHPs.

Research design

A natural experiment comparing pre-post changes in monthly and annual outcomes in matched study groups.

Subjects

The intervention group included 1744 commercially-insured HSA-HDHP patients with diabetes age 12-64 years switched by employers to PDL coverage; the control group included 3349 propensity-matched HSA-HDHP patients whose employers offered no PDL.

Measures

Outcomes were out-of-pocket (OOP) costs for medications and the number of pharmacy fills converted to 30-day equivalents.

Results

Transition to the PDL was associated with a relative pre-post decrease of $612 (-35%, P<0.001) per member OOP medication expenditures; OOP reductions were higher for key classes of antidiabetic and cardiovascular medicines listed on the PDL; the policy did not affect unlisted classes. The PDL group experienced relative increases in medication use of 6.0 30-day fills per person during the year (+11.2%, P<0.001); the increase was more than twice as large for lower-income (+6.6 fills, +12.6%, P<0.001) than higher-income (+3.0 fills, +5.1%, P=0.024) patients.

Conclusion

Transition to a PDL which covers important classes of medication to manage diabetes and cardiovascular conditions is associated with substantial annual OOP cost savings for patients with diabetes and increased utilization of important classes of medications, especially for lower-income patients.

SUBMITTER: Ross-Degnan D

PROVIDER: S-EPMC7676281 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:ImportanceHealth savings accounts (HSAs) can be used by enrollees in high-deductible health plans (HDHPs) to save for health care expenses before taxes. Expansion of and encouraging contributions to HSAs have been centerpieces of recent federal legislation. Little is known about how US residents who may be eligible for HSAs are using them to save for health care.ObjectiveTo determine which patients who may be eligible for an HSA do not have one and what decisions patients with HSAs make about contributing to them.Design, setting, and participantsThis cross-sectional national survey assessed an online survey panel representative of the US adult population. Adults aged 18 to 64 years and enrolled in an HDHP for at least 12 months were eligible to participate. Data were collected from August 26 to September 19, 2016, and analyzed from November 1, 2019, to April 30, 2020.Main outcomes and measuresPrevalence of not having an HSA or not making HSA contributions in the last 12 months and reasons for not making the HSA contributions.ResultsBased on data from 1637 individuals (American Association of Public Opinion Research response rate 4, 54.8%), half (50.6% [95% CI, 47.7%-53.6%]) of US adults in HDHPs were female, and most were aged 36 to 51 (35.7% [95% CI, 32.8%-38.6%]) or 52 to 64 (36.8% [95% CI, 34.1%-39.5%]) years. Approximately 1 in 3 (32.5% [95% CI, 29.8%-35.3%]) did not have an HSA. Those who obtained their health insurance through an exchange were more likely to lack an HSA (70.3% [95% CI, 61.9%-78.6%]) than those who worked for an employer that offered only 1 health insurance plan (36.5% [95% CI, 30.9%-42.1%]; P < .001). More than half of individuals with an HSA (55.0% [95% CI, 51.1%-58.8%]) had not contributed money into it in the last 12 months. Among HDHP enrollees with an HSA, those with at least a master's degree (46.1% [95% CI, 38.3%-53.9%]; P = .02) or a high level of health insurance literacy (47.3% [95% CI, 40.7%-54.0%]; P = .03) were less likely to have made no HAS contributions. Common reasons for not contributing to an HSA included not considering it (36.8% [95% CI, 30.8%-42.8%]) and being unable to afford saving for health care (31.9% [95% CI, 26.2%-37.6%]).Conclusions and relevanceThese findings suggest that many US adults enrolled in an HDHP lack an HSA, and few with an HSA saved for health care in the last year. Targeted interventions should be explored by employers, health plans, and health systems to encourage HSA uptake and contributions among individuals who could benefit from their use.

Project description:ImportanceHigh-deductible health plans with health savings accounts (HDHP-HSAs) incentivize patients to use less health care, including necessary care. Preventive drug lists (PDLs) exempt high-value medications from the deductible, reducing out-of-pocket cost sharing; the associations of PDLs with health outcomes among patients with asthma is unknown.ObjectiveTo evaluate the associations of a PDL for asthma medications on utilization, adverse outcomes, and patient spending for HDHP-HSA enrollees with asthma.Design, setting, and participantsThis case-control study used matched groups of patients with asthma before and after an insurance design change using a national commercial health insurance claims data set from 2004-2017. Participants included patients aged 4 to 64 years enrolled for 1 year in an HDHP-HSA without a PDL in which asthma medications were subject to the deductible who then transitioned to an HDHP-HSA with a PDL that included asthma medications; these patients were compared with a matched weighted sample of patients with 2 years of continuous enrollment in an HDHP-HSA without a PDL. Models controlled for patient demographics and asthma severity and were stratified by neighborhood income. Analyses were conducted from October 2020 to June 2023.ExposuresEmployer-mandated addition of a PDL that included asthma medications to an existing HDHP-HSA.Main outcomes and measuresOutcomes of interest were utilization of asthma medications on the PDL (controllers and albuterol), asthma exacerbations (oral steroid bursts and asthma-related emergency department use), and out-of-pocket spending (all and asthma-specific).ResultsA total of 12 174 participants (mean [SD] age, 36.9 [16.9] years; 6848 [56.25%] female) were included in analyses. Compared with no PDL, PDLs were associated with increased rates of 30-day fills per enrollee for any controller medication (change, 0.10 [95% CI, 0.03 to 0.17] fills per enrollee; 12.9% increase) and for combination inhaled corticosteroid long-acting β2-agonist (ICS-LABA) medications (change, 0.06 [95% CI, 0.01 to 0.10] fills per enrollee; 25.4% increase), and increased proportion of days covered with ICS-LABA (6.0% [0.7% to 11.3%] of days; 15.6% increase). Gaining a PDL was associated with decreased out-of-pocket spending on asthma care (change, -$34 [95% CI, -$47 to -$21] per enrollee; 28.4% difference), but there was no significant change in asthma exacerbations and no difference in results by income.Conclusions and relevanceIn this case-control study, reducing cost-sharing for asthma medications through a PDL was associated with increased adherence to controller medications, notably ICS-LABA medications used by patients with more severe asthma, but was not associated with improved clinical outcomes. These findings suggest that PDLs are a potential strategy to improve access and affordability of asthma care for patients in HDHP-HSAs.