Patterns in Medicaid Coverage and Service Utilization Among People with Serious Mental Illnesses

Area of Science:

• Health Services Research
• Mental Health Policy
• Public Health

Background:

• Medicaid is a critical payer for individuals with serious mental illness (SMI).
• Enrollment disruptions in Medicaid can hinder access to necessary mental health services.
• Understanding patterns of Medicaid coverage stability is essential for evaluating care delivery for SMI populations.

Purpose of the Study:

• To examine the relationship between Medicaid coverage continuity and service utilization among individuals with SMI.
• To identify factors associated with Medicaid enrollment disruptions in the SMI population.
• To assess the impact of coverage disruptions on outpatient and acute care service use.

Main Methods:

• Retrospective longitudinal study design.
• Analysis of Medicaid coverage and service utilization data for 8358 individuals with SMI from 2007 to 2010.
• Statistical modeling to assess predictors of coverage disruptions and their association with service use.

Main Results:

• Only 36% of individuals with SMI had continuous Medicaid enrollment; 20% experienced multiple disruptions.
• Individuals with schizophrenia had higher odds of multiple coverage disruptions compared to those with depression.
• Both single and multiple Medicaid coverage disruptions were significantly associated with reduced outpatient service days and decreased odds of not using acute care services.

Conclusions:

• Medicaid enrollment instability is prevalent among individuals with SMI and is linked to reduced service utilization.
• Schizophrenia diagnosis is associated with a higher likelihood of coverage disruptions.
• Interventions promoting insurance stability are needed to improve healthcare access and outcomes for individuals with SMI.