Table 1.

BSTI CXR category definitions and interpretation

Code	Category	Main findings and interpretation
CVCX0	Normal	Normal CXR. COVID-19 not excluded- correlate with RT-PCR and clinical suspicion
CVCX1	Classic/probable COVID-19	Lower lobe and peripheral predominant multiple opacities that are usually bilateral
CVCX2	Indeterminate for COVID-19	Does not fit Classic or Non-COVID-19 descriptors- correlate with RT-PCR and clinical suspicion
CVCX3	Non-COVID-19	No typical findings of COVID-19, and other findings suggesting an alternative diagnosis (e.g. pneumothorax, lobar pneumonia, pleural effusion(s), pulmonary oedema)