Alcohol Use Disorder Medication Coverage and Utilization Management in Medicaid Managed Care Plans.

Importance: Evidence-based, patient-centered treatment for alcohol use disorder (AUD) can include pharmacotherapy with naltrexone, acamprosate, or disulfiram; however, these medications are rarely used. Medicaid managed care plans (MCPs) manage health services for nearly 80% of Medicaid enrollees and are the largest payer for addiction treatment services. Little is known about Medicaid MCP policies for AUD medications.

Objectives: To describe Medicaid MCPs' coverage and management of acamprosate, naltrexone, and disulfiram for AUD and examine associations of plan characteristics and state policies with medication coverage.

Design, setting, and participants: In this cross-sectional study, a content analysis was performed of 2021 insurance benefit data for 241 comprehensive Medicaid MCPs in states using Medicaid managed care, as well as secondary sources. Data were analyzed from May to August 2024.

Main outcomes and measures: Medicaid MCP-reported medication coverage and utilization management requirements (eg, prior authorization, quantity limit requirements) for acamprosate, disulfiram, and oral and injectable naltrexone together and for each medication separately. Independent variables included plan characteristics (profit status, market share) and the state policy environment in which plans are embedded (Section 1115 substance use disorder waiver, state-defined preferred drug list). Regressions examined associations of plan characteristics and state policies with medication coverage.

Results: In this cross-sectional content analysis of 241 comprehensive Medicaid MCPs in 2021, 217 (90.0%) covered at least 1 medication for AUD: 132 (54.7%) covered acamprosate, 203 (84.2%) covered oral naltrexone, 175 (72.6%) covered injectable naltrexone, 152 (63.0%) covered disulfiram, and 103 (42.7%) covered all 4 medications. Prior authorization and quantity limits were rarely applied, except for injectable naltrexone, for which 75 plans (42.8%) imposed at least 1 of these utilization management requirements.

Conclusions and relevance: This study suggests that efforts to expand AUD medication prescribing may be limited by gaps in health insurance coverage. Medicaid MCPs and states can support AUD medication utilization by covering these medications without applying utilization management strategies.