Table 4.

The frequencies of using ICD-10 codes and the diagnostic accuracy between ICD-10 codes and laboratory tests for identification of confirmed COVID-19 cases.

Item	Number of Records (% of 328)	Sensitivity	Specificity	Accuracy
COVID-19 ICD-10 codes
U07.1	133 (40.55%)	24.31%	27.27%	25.30%
U07.2	1 (0.30%)	0.46%	100%	33.84%
B34.2	1 (0.30%)	0%	99.09%	33.23%
B97.2	253 (77.13%)	99.08%	66.36%	85.37%
U07.1 and B97.2	60 (18.29%)	23.85%	92.73%	46.95%
COVID-19 Laboratory test
Positive	194 (59.15%)	89%	100%	92.68%