T58.9 - Toxic effect of carbon monoxide from unspecified source T58 - Toxic effect of carbon monoxide T58.9 - Toxic effect of carbon monoxide from unspecified source T58.91 - Toxic effect of carbon monoxide from unspecified source, accidental (unintentional) T58.92 - Toxic effect of carbon monoxide from unspecified source, intentional self-harm T58.93 - Toxic effect of carbon monoxide from unspecified source, assault T58.94 - Toxic effect of carbon monoxide from unspecified source, undetermined