The Impacts of 1115 Medicaid Substance Use Disorder Waivers on Medicaid-Paid Use of Residential Treatment and Other Types of Services in 20 States.

ABSTRACT:

Objective

To assess the association between the implementation of 1115 Medicaid substance use disorder (SUD) waivers and changes in Medicaid-paid use of residential treatment and other types of services.

Study setting and design

We compared 20 states with SUD waivers to 14 non-waiver states using a staggered difference-in-differences design. Primary outcomes were Medicaid-paid opioid-use disorder (OUD) related residential treatment stays and length of stay (LOS). Secondary outcomes included admissions and LOS for all-cause and OUD-related inpatient stays, psychiatric hospital admissions, emergency department (ED) visits, outpatient visits, and primary care visits.

Data source and analytic sample

We used the 2016-2021 Transformed Medicaid Statistical Information System

SUBMITTER: Lindner SR 

PROVIDER: S-EPMC12377293 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature