Table 1.

The BSTI coding system (REF) for classifying COVID-19 findings on a chest x-ray image.

Code	Classification	Findings
CVCX0	Normal	COVID-19 not excluded. Correlated with RT-PCR
CVCX1	Classic/probable COVID-19	Lower lobe and peripheral predominant multiple opacities that are bilateral (>> unilateral)
CVCX2	Indeterminate for COVID-19	Does not fit Classic or Non-COVID-19 descriptors
CVCX3	Non-COVID-19	Pneumothorax/Lobar pneumonia/Pleural effusion(s)/Pulmonary oedema Other