Fig. 4.

Probability of false negative results for 9 comorbid phenotypes across 3 phenotyping algorithms (ICD-10 based and ICD-10 plus domain-specific algorithms provided by an EHR vendor and clinical experts) among an early COVID-19 population, March 1 through June 5, 2020. Medical Home: At least one primary care visit before the first test date as defined using clinic location identifiers; No PC visit: Only non-primary care visit(s) before the first test date; No visits: No billing dates prior to the week before the first test date; Comprehensive CPT: patients with comprehensive history CPT code; No CPT: patients without comprehensive history CPT code; All demos available: EHRs with complete age, self-reported race, and gender data elements; Missingness (demos): at least one missing demographic variable in the EHR.