Objectives
This study examined implementation of the Affordable Care Act (ACA) in relation to HIV-positive patient enrollment in an integrated health care system; as well as changes in new enrollee characteristics, benefit structure and health care utilization after key ACA provisions went into effect in 2014.
Methods
This mixed-methods study was set in Kaiser Permanente Northern California (KPNC). Qualitative interviews with 29 KPNC leaders explored planning for ACA implementation. Quantitative analyses compared newly enrolled HIV-positive patients in KPNC between January-December 2012 (“pre-ACA”, N=661) with newly enrolled HIV-positive patients between January-December 2014 (“post-ACA”, N=880) on demographics; medical, psychiatric and substance use disorder diagnoses; HIV clinical indicators; and type of health care utilization.
Results
Interviews found that ACA preparation focused on enrollment growth, staffing, competition among health plans, concern about cost sharing, and HIV pre-exposure prophylaxis (PrEP) services. Quantitative analyses found that post-ACA HIV-positive patient enrollment grew. New enrollees in 2014 were more likely than 2012 enrollees to be enrolled in high-deductible plans (p<.01) or through Medicaid (p<.01), and marginally more likely to have better HIV viral control (p<.10). They also were more likely to be diagnosed with asthma (p<.01) or substance use disorders (p<.05) and to have used primary care health services in the 6 months post-enrollment (p<.05) than the pre-ACA cohort.
Conclusions
As anticipated by KPNC interviewees, ACA implementation was followed by HIV-positive patient enrollment growth and changing benefit structures and patient characteristics. Although HIV viral control improved, comorbid diagnosis findings reinforced the importance of coordinated health care.