The role of restrictive scope‐of‐practice regulations on the delivery of nurse practitioner‐delivered home‐based primary care

Abstract

Background Nurse practitioners (NPs) are the largest group of providers delivering home‐based primary care (HBPC) in the U.S. We examined the association of scope‐of‐practice regulations and NP‐HBPC rates. Methods Using the Centers for Medicare and Medicaid Services Provider Utilization and Payment Data Public Use File for 2019, we conducted a state‐level analysis to examine the impact of scope‐of‐practice regulations on the utilization of NP‐HBPC. Healthcare Common Procedure Coding System codes were used to identify the HBPC visits in private residences (99341–99,345, 99,347–99,350) and domiciliary settings (99324–99,328, 99,334–99,337). We used linear regression to compare NP‐HBPC utilization rates between states of either restricted or reduced scope‐of‐practice laws to states with full scope‐of‐practice, adjusting for a number of NP‐HBPC providers, state ranking of total assisted living, the proportion of fee‐for‐service (FFS) Medicare beneficiaries and neighborhood‐level socio‐economic status and race and ethnicity. Results Nearly half of NPs providing HBPC (46%; n = 7151) were in states with a restricted scope of practice regulations. Compared to states with full scope‐of‐practice, states with restricted or reduced scope‐of‐practice had higher adjusted rates of NP‐HBPC per 1000 FFS Medicare beneficiaries. The average level of the utilization rate of NP‐HBPC was 89.9, 63, and 49.1 visits, per 1000 FFS Medicare beneficiaries in states with restricted, reduced, and full‐ scope‐of‐practice laws, respectively. The rate of NP‐HBPC visits was higher in states with restricted (Beta coefficient = 0.92; 95%CI 0.13–1.72; p = 0.023) and reduced scope‐of‐practice laws (Beta coefficient = 0.91; 95%CI 0.03–1.79; p = 0.043) compared to states with full scope‐of‐practice laws. Conclusion Restricted state NP scope‐of‐practice regulations were associated with higher rates of FFS Medicare NP‐HBPC care delivery compared with full or reduced scope‐of‐practice. Understanding underlying mechanisms of how scope‐of‐practice affects NP‐HBPC delivery could help to develop scope‐of‐practice regulations that improve access to HBPC for the underserved homebound population.