Objective: To describe patterns of care use for adult Medicaid beneficiaries with diabetes and the association between primary care utilization and Ambulatory Care Sensitive (ACS) diabetes hospitalizations.

Methods: This retrospective cohort study analyzes Alabama Medicaid claims data from January 2010 to April 2018 for 52,549 covered adults ages 19 to 64 with diabetes. Individuals were characterized by demographics, comorbidities, and health care use including primary, specialty, mental health, pharmaceutical, laboratory and hospital care. Characteristics of those with and without any ACS diabetes hospitalization are reported. A set of 118,758 observations was created, pairing information on primary care use in one year with ACS hospitalizations in the following year. Logistic regression analysis was used to assess the impact of primary care use in one year on the occurrence of an ACS hospitalization in the following year.

Results: One third of the cohort had at least one ACS diabetes hospitalization over their observed periods; hospital users tended to have multiple ACS hospitalizations. Hospital users had more comorbidities and pharmaceutical and other types of care use than those with no ACS hospitalizations. Controlling for other types of care use, comorbidities and demographics, having a primary care visit in one year was significantly associated with a reduced likelihood of ACS hospitalization in the following year (adjusted odds ratio comparing 1-2 primary care visits versus none 0.79, 95% confidence interval 0.73-0.85).

Conclusions: Program and population health interventions that increase access to primary care can have a beneficial effect of reducing excess inpatient hospital use for Medicaid covered adults with diabetes.


J.M. Bronstein: None. L. Huang: None. A.A. Agne: None. F.L. Mondesir: None. C.A. Presley: None. K.R. Riggs: None. M. Pisu: None. E.B. Levitan: Consultant; Self; Novartis Pharmaceuticals Corporation. Research Support; Self; Amgen Inc. A. Cherrington: None.


National Institute of Diabetes and Digestive and Kidney Diseases

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