Advance Care Planning Billing Codes Associated With Decreased Healthcare Utilization in Neurological Disease.

Goals: Advance care planning (ACP) procedure codes have been established to reimburse meaningful care goal discussions; however, the utilization frequency of these codes in neurological disease is unknown. The objective of this study is to identify the association between ACP codes and healthcare utilization in chronic neurodegenerative diseases.

Methods: This is a multicenter cohort study using real-world electronic health data. Using the TriNetX database, we collected electronic health data from 92 institutions in the United States. We included patients aged 65 and older who had been diagnosed with one of four neurological diseases: Alzheimer's disease, Parkinson's disease, multiple sclerosis, or amyotrophic lateral sclerosis (ALS). Patients with congestive heart failure were included as a reference. From the 64,683,009 total patients in the database, 877,138 had Alzheimer's disease, 544,610 had Parkinson's disease, 208,341 had multiple sclerosis, 9,944 had amyotrophic lateral sclerosis, and 1,500,186 had congestive heart failure. For each disease, we compared hospitalizations and emergency department (ED) visits over a two-year period between patients with and without ACP codes documented. Then, in patients with ACP, we investigated the rates of hospitalizations and ED visits over the two years before ACP and two years after ACP to understand the impact of ACP on the healthcare utilization trend. All patients had records for at least two years after index.

Principal findings: The rate of ACP code documentation ranged from 1.8% of multiple sclerosis patients to 3.6% of Alzheimer's disease patients. After matching for demographic and health variables, usage of ACP codes was associated with significantly fewer hospitalizations for Alzheimer's disease patients. Across all diseases, there was a 20% to 30% decrease in ED visits, which was significant. Furthermore, there was a significant change in the trend of hospitalizations and ED visits for patients after ACP documentation. Patients went from increasing utilization before ACP documentation to decreasing utilization after documentation.

Practical applications: ACP billing codes are used infrequently in neurological disease, which may indicate that reimbursement alone is not sufficient to drive code usage. Usage of ACP billing codes was associated with decreased healthcare utilization, particularly in terms of ED visits. Beyond the primary objective of providing goal-concordant care, ACP may impact the economic burden of chronic neurodegenerative disease, which has high costs of care in our aging society. There may be particular benefits with Alzheimer's disease, which had an impact on both hospitalizations and ED visits and is the most prevalent neurodegenerative disease. Future work is needed to better understand the best implementation strategy for ACP in a multifaceted approach that emphasizes patient care preferences for their illness.