ICD-10-CM > S00-T88 > T36-T50 > T40 > T40.1 T40.1 Poisoning by and adverse effect of heroin Non-Billable/Non-Specific Codes T40.1XPoisoning by and adverse effect of heroinT40.1X1Poisoning by heroin, accidental (unintentional)T40.1X1A..., initial encounterT40.1X1D..., subsequent encounterT40.1X1S..., sequelaT40.1X2Poisoning by heroin, intentional self-harmT40.1X2A..., initial encounterT40.1X2D..., subsequent encounterT40.1X2S..., sequelaT40.1X3Poisoning by heroin, assaultT40.1X3A..., initial encounterT40.1X3D..., subsequent encounterT40.1X3S..., sequelaT40.1X4Poisoning by heroin, undeterminedT40.1X4A..., initial encounterT40.1X4D..., subsequent encounterT40.1X4S..., sequela