Carolyn Kim, MPH

 To determine whether patients are deferring necessary care for urgent conditions during the coronavirus disease 2019 (COVID-19) pandemic and, if so, to what extent.

 Using billing data from 8 acute care hospitals, we identified 9 principal medical diagnoses from 

International Classification of Diseases, Tenth Revision

 codes across 4 medical specialties (cardiology, gastroenterology, neurology, and urology). In addition, we defined a combined obstetrical falsification end point. We compared daily admission rates during the pandemic period (3/1/2020-4/30/2020) with the same dates in 2019 (3/1/2019-4/30/2019). As a reference, we also compared a prepandemic period in the same years (1/1/2019-2/28/2019 and 1/1/2020-2/29/2020). We compared admission rates between years using 

 There were 3219 admissions for the conditions of interest during the study period in 2019 and 2661 in 2020. There was no difference in prepandemic daily admission rates in 2020 compared with 2019 (29.04 vs 27.63 admissions per day; –4.9%; 

= .50). During the pandemic period, there was a 33.7% decrease in admission rates for all conditions combined in 2020 compared with 2019 (24.68 vs 16.37; –33.7%; 

 = .03). By specialty, the combined gastroenterology (10.22 vs 7.20; –29.6%; 

= .02) and cardiovascular (2.34 vs 1.29; –44.7%; 

= .05) end points demonstrated reduction in daily admission rates.

 Daily admission rates during the COVID-19 pandemic were lower for these acute medical conditions. Public awareness campaigns are urgently needed to reassure the public about the safety of presenting for care.

Patients may be avoiding medical facilities during the coronavirus disease 2019 (COVID-19) pandemic.

 Whether patients are deferring needed care for urgent conditions and to what extent are unknown. We compared admission rates for acute medical conditions during the COVID-19 pandemic with a reference year.

We used billing data from 8 acute care hospitals within a major integrated health system. We selected medical conditions for which incidence should not be affected by COVID-19. We identified 9 principal diagnoses from 

 codes across 4 specialties: cardiovascular disease (ST-segment elevation myocardial infarction [STEMI], aortic dissection), neurology (cerebrovascular accident, seizure), gastroenterology (appendicitis, cholecystitis, pancreatitis, gastrointestinal bleed), and urology (urolithiasis). In addition, we defined a combined obstetrical falsification end point (ectopic pregnancies, miscarriages, vaginal deliveries, and cesarean sections).

We compared daily admission rates during the pandemic period (3/1/2020-4/30/2020) with the same dates in 2019 (3/1/2019-4/30/2019). As a reference, we also compared a prepandemic period in the same years (1/1/2019-2/28/2019 and 1/1/2020-2/29/2020). We compared admission rates between years using 

 tests. We also describe basic demographic data for both 2019 and 2020. This project was undertaken as a Quality Improvement Initiative at Mass General Brigham and as such was not formally supervised by the Institutional Review Board per its policies.

There were 3219 admissions for the conditions of interest during the study period in 2019 and 2661 in 2020. In 2020, patients were 73.4% white, 53.4% male, and 86.8% English speaking, and 60.0% were older than 60 years; 41.5% were Medicare beneficiaries. There was no difference in prepandemic daily admission rates in 2020 compared with 2019 (29.04 vs 27.63 admissions per day; –4.9%; 

). During the pandemic period, there was a 33.7% decrease in admission rates for all conditions combined in 2020 compared with 2019 (24.68 vs 16.37; –33.7%; 

= .03). By specialty, the combined gastroenterology (10.22 vs 7.20; –29.6%; 

= .05) end points showed reduction in daily admission rates. In condition-specific analyses, cholecystitis (3.44 vs 2.10; –38.9; 

= .06), gastrointestinal bleed (3.35 vs 2.37; –29.2%; 

= .08), and aortic dissection (1.36 vs 0.54; –60.3%; 

= .12) showed a trend toward difference. There was no difference in admission volume for the falsification end point (48.3 vs 45.6; –5.5%; 

Daily admission rates during the COVID-19 pandemic were lower for these acute medical conditions. Although combined specialty end points exhibited a decrease in daily admissions, the individual conditions were likely underpowered to identify similar changes. STEMI had an effect estimate similar in magnitude to that found in previous studies, and other conditions demonstrated a trend toward difference.

The observational design limits our ability to draw causal conclusions. One explanation for these findings is that patients are fearful of engaging with medical facilities during the pandemic. Alternatively, changes in emergency department practices may result in fewer admissions or in admissions under different primary diagnosis codes related to COVID-19.

Because a change in incidence is unlikely for these conditions on clinical grounds, these results raise the possibility that patients are not presenting for necessary care. Public awareness campaigns are urgently needed to reassure the public about the safety of presenting for care.

 Cardiology Division, Department of Medicine, Massachusetts General Hospital (ASO, JHW), Boston, MA; Data and Analytics Organization, Partners Healthcare (DN, CK, SM, PYL, JP), Boston, MA; Division of General Internal Medicine, Department of Health Care Policy, Brigham and Women’s Hospital, Harvard Medical School (TDS), Boston, MA.

 Ms Nash, Ms Kim, and Ms Moisuk are employed with Partners Healthcare. Dr Wasfy is employed with Massachusetts General Hospital. The remaining authors report no relationship or financial interest with any entity that would pose a conflict of interest with the subject matter of this article.

 Concept and design (ASO, DN, JP, TDS, JHW); acquisition of data (DN, CK, SM, JP, TDS); analysis and interpretation of data (DN, CK, SM, PYL, JP, JHW); drafting of the manuscript (ASO, JHW); critical revision of the manuscript for important intellectual content (ASO, TDS, JHW); statistical analysis (DN, CK, SM, PYL, JHW); administrative, technical, or logistic support (PYL, JP, JHW); and supervision (PYL, JP, TDS, JHW).

 Jason H. Wasfy, MD, MPhil, Massachusetts General Hospital, 55 Fruit St, Boston, MA 02114. Email: jwasfy@mgh.harvard.edu.

1. Garcia S, Albaghdadi MS, Meraj PM, et al. Reduction in ST-segment elevation cardiac catheterization laboratory activations in the United States during COVID-19 pandemic. 

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2. Rosenbaum L. The untold toll—the pandemic’s effects on patients without Covid-19. 

. Published online April 17, 2020. doi:10.1056/NEJMms2009984

3. Rodríguez-Leor O, Cid-Álvarez B, Ojeda S, et al; Registro de Código Infarto de la ACI-SEC. Impacto de la pandemia de COVID-19 sobre la actividad asistencial en cardiología intervencionista en España. 

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