T59.7X - Toxic effect of carbon dioxide T59.7 - Toxic effect of carbon dioxide T59.7X - Toxic effect of carbon dioxide T59.7X1 - Toxic effect of carbon dioxide, accidental (unintentional) T59.7X2 - Toxic effect of carbon dioxide, intentional self-harm T59.7X3 - Toxic effect of carbon dioxide, assault T59.7X4 - Toxic effect of carbon dioxide, undetermined