ICD-10-CM > S00-T88 > T51-T65 > T58 > T58.8 > T58.8X T58.8X Toxic effect of carbon monoxide from other source Non-Billable/Non-Specific Codes T58.8X1Toxic effect of carbon monoxide from other source, accidental (unintentional)T58.8X1A..., initial encounterT58.8X1D..., subsequent encounterT58.8X1S..., sequelaT58.8X2Toxic effect of carbon monoxide from other source, intentional self-harmT58.8X2A..., initial encounterT58.8X2D..., subsequent encounterT58.8X2S..., sequelaT58.8X3Toxic effect of carbon monoxide from other source, assaultT58.8X3A..., initial encounterT58.8X3D..., subsequent encounterT58.8X3S..., sequelaT58.8X4Toxic effect of carbon monoxide from other source, undeterminedT58.8X4A..., initial encounterT58.8X4D..., subsequent encounterT58.8X4S..., sequela