Telemedicine Use for Oncology Clinic Visits at a Large Medical Center During the Onset of COVID-19

Introduction: The COVID-19 pandemic created an unprecedented surge toward telemedicine. This project investigated oncology clinic telemedicine utilization across the Vanderbilt University Medical Center (VUMC) from January to October 2020. Poorer prognosis and care of oncology patients is expected to be associated with increased emergency department (ED) visits. Methods: January to October 2020 clinic visits were identified from the VUMC's Electronic Data Warehouse (EDW). Oncology patients were identified by ICD-10 code and their EDW ED visit data were extracted. Joinpoint piecewise linear regression evaluated trends in tele-oncology visits. VUMC ED visits were compared for patients who did versus did not use telemedicine for oncology clinic visits. A Welch's two-tailed t-test investigated differences in ED visits/patient between these cohorts (α < 0.05). Results: A sharp increase in tele-oncology clinic visits from January to April 2020 (Monthly Percent Change = 396.26%) was followed by a steady decrease from April to October 2020 (Monthly Percent Change = -20.93%). The difference between these two trends was significant (p < 0.002). Of 18 cancer sites, breast cancers had the highest proportion (29.04%) of tele-oncology visits. There was no significant difference in January to October 2020 ED usage for oncology patients who did (0.40 ED visits/patient) versus did not (0.38 ED visits/patient) utilize telemedicine (p = 0.69). A total of 9.64% of oncology clinic visits from January to October 2020 were telemedicine visits, just below the 13.0% institutional average. Discussion: At the VUMC, tele-oncology spiked in March and April 2020 before decreasing from April to October 2020. Breast cancer clinics were most likely to use tele-oncology. Telemedicine use was not associated with increased ED visits for oncology patients, suggesting telemedicine as an alternative for routine oncology clinics. Oncology clinic telemedicine usage was 18th-highest among 33 specialties at our institutions, and among the lowest of nonsurgical specialties.