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Health Care Spending Slowed After Rhode Island Applied Affordability Standards To Commercial Insurers.

ABSTRACT: States are introducing regulations to slow health care spending growth, but which of these successfully reduce spending growth remains unclear. We studied Rhode Island's 2010 affordability standards, which imposed price controls-particularly inflation caps and diagnosis-based payments-on contracts between commercial insurers and hospitals and clinics and required commercial insurers to increase their spending on primary care and care coordination services. Using a difference-in-differences design, we compared spending among 38,001 commercially insured adults in Rhode Island to that among 38,001 matched adults in other states in the period 2007-16. Relative to quarterly fee-for-service (FFS) spending among the control group, quarterly FFS spending among the Rhode Island group decreased by $76 per enrollee after implementation of the policy, or a decline of 8.1 percent from 2009 spending. Quarterly non-FFS primary care coordination spending increased by $21 per enrollee. Total spending growth decreased, driven by lower prices concordant with the adoption of price controls. Quality measures were unaffected or improved. The Rhode Island experience indicates that states may be able to slow total commercial health care spending growth through price controls while maintaining quality.

SUBMITTER: Baum A

PROVIDER: S-EPMC6593124 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Health Care Spending Slowed After Rhode Island Applied Affordability Standards To Commercial Insurers.

Baum Aaron A Song Zirui Z Landon Bruce E BE Phillips Russell S RS Bitton Asaf A Basu Sanjay S

Health affairs (Project Hope) 20190201 2

States are introducing regulations to slow health care spending growth, but which of these successfully reduce spending growth remains unclear. We studied Rhode Island's 2010 affordability standards, which imposed price controls-particularly inflation caps and diagnosis-based payments-on contracts between commercial insurers and hospitals and clinics and required commercial insurers to increase their spending on primary care and care coordination services. Using a difference-in-differences desig ...[more]

PMID: 30715981

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Project description:ImportanceThe benefits of public payment policy may extend to private populations through "spillover" effects. If cost-saving efforts in Medicare also reduce costs among commercially insured patients, Medicare payment systems could be a versatile policy tool in future reform efforts.ObjectivesTo determine whether physicians who participated in a Medicare Accountable Care Organization (ACO) reduced spending among their commercial patients.DesignThis was a retrospective, longitudinal study which was conducted using Blue Cross Blue Shield of Michigan (BCBSM) claims data from 2010 to 2015. We compared patients seen by physicians who participated in a Medicare ACO to patients whose physicians were not part of an ACO. We used a difference-in-differences (DIDs) design to test whether physician participation in an ACO was associated with reduced spending among their commercially insured patients. We also tested for heterogeneous effects: we assessed whether spillovers were larger among patients with clinical conditions (acute myocardial infarction, pneumonia, congestive heart failure) that have previously been targeted by Medicare payment programs.SettingThis was a population-based study of commercially insured patients in Michigan.ParticipantsPatients who experienced a significant clinical episode (eg, labor and delivery, acute myocardial infarction) between 2010 and 2015.ExposureOur patient-level exposure is treatment by a Medicare ACO-affiliated physician.Main outcomes and measuresMedical spending of 0-90 days and 91-365 days after a clinical episode.ResultsPatients in the exposure group (n=54,750) and in the control group (n=137,883) were similar in demographic characteristics of age, sex, and type of clinical episodes. Adjusted mean 90-day spending in the preexposure period was $21,292 among the exposure group and $21,157 among the comparison group; these means declined to $21,250 and $20,995 in the postperiod, yielding a DIDs estimate of $119 [95% confidence interval (CI), -$170 to $408]. Adjusted means for 91-365 days spending in the preperiod were $4258 among the exposure group and $4251 among the comparison group; these means rose to $4338 and $4421 in the postperiod, yielding a DIDs estimate of -$90 (95% CI, -$312 to $132). We also separately examined patients with conditions that have been targeted by other Medicare payment programs. Among these patients, 90-day spending did not differ between exposure and comparison groups (DIDs, -$223; 95% CI, -$2037 to $1591), although 91-365 days spending decreased among the exposure group with marginal statistical significance (DIDs, -$1160; 95% CI, -$2459 to $140).Conclusions and relevancePhysicians who participated in Medicare ACOs did not reduce spending among most of their commercially insured patients. Medicare policy is unlikely to confer significant spillover benefits to the commercially insured population.

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Health Care Spending Slowed After Rhode Island Applied Affordability Standards To Commercial Insurers.

Publications

Health Care Spending Slowed After Rhode Island Applied Affordability Standards To Commercial Insurers.

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