ICD-10-CM > S00-T88 > T36-T50 > T40 > T40.0 > T40.0X T40.0X Poisoning by, adverse effect of and underdosing of opium Non-Billable/Non-Specific Codes T40.0X1Poisoning by opium, accidental (unintentional)T40.0X1A..., initial encounterT40.0X1D..., subsequent encounterT40.0X1S..., sequelaT40.0X2Poisoning by opium, intentional self-harmT40.0X2A..., initial encounterT40.0X2D..., subsequent encounterT40.0X2S..., sequelaT40.0X3Poisoning by opium, assaultT40.0X3A..., initial encounterT40.0X3D..., subsequent encounterT40.0X3S..., sequelaT40.0X4Poisoning by opium, undeterminedT40.0X4A..., initial encounterT40.0X4D..., subsequent encounterT40.0X4S..., sequelaT40.0X5Adverse effect of opiumT40.0X5A..., initial encounterT40.0X5D..., subsequent encounterT40.0X5S..., sequelaT40.0X6Underdosing of opiumT40.0X6A..., initial encounterT40.0X6D..., subsequent encounterT40.0X6S..., sequela