The Impact of Medicaid Expansion on Early-Stage Hepatocellular Carcinoma Care.

ABSTRACT

INTRODUCTION: The impact of Medicaid expansion (ME) on hepatocellular carcinoma (HCC) remains controversial, and heterogeneous effects on care processes may relate to sociodemographic factors. We sought to evaluate the association between ME and receipt of surgery in early-stage HCC. METHODS: Patients diagnosed with early-stage HCC between 40 and 64 years of age were identified from the National Cancer Database and divided into pre- (2004-2012) and post- (2015-2017) expansion cohorts. Logistic regression was used to identify predictors of surgical treatment. Difference-in-difference (DID) analysis assessed changes in surgical treatment between patients living in ME and non-ME states. RESULTS: Among 19,745 patients, 12,220 (61.9%) were diagnosed before ME and 7525 (38.1%) after. Although overall utilization of surgery decreased after expansion (ME, pre-expansion 62.2% versus post-expansion 51.6%; non-ME, pre-expansion 62.1% versus post-expansion 50.8%, p < 0.001), this trend varied relative to insurance status. Notably, receipt of surgery increased among uninsured/Medicaid patients living in ME states after expansion (pre-expansion 48.1%, post-expansion 52.3%, p < 0.001). Moreover, treatment at academic or high-volume facilities increased the likelihood of undergoing surgery before expansion. After expansion, treatment at an academic facility and living in an ME state (OR 1.28, 95% CI 1.07-1.54, p < 0.01) were predictors of surgical treatment. DID analysis demonstrated increased utilization of surgery for uninsured/Medicaid patients living in ME states relative to non-ME states (uninsured/Medicaid 6.4%, p < 0.05), although no differences were noted among patients with other insurance statuses (overall 0.7%, private -2.0%, other 0.3%, all p > 0.05). CONCLUSIONS: Implementation of ME heterogeneously impacted utilization of care in early-stage HCC. Notably, uninsured/Medicaid patients residing in ME states demonstrated increased utilization of surgical treatment after expansion.