ICD-10-CM > S00-T88 > T36-T50 > T40 > T40.0 > T40.0X > T40.0X5 T40.0X5 Adverse effect of opium Non-Billable/Non-Specific Codes T40.0X5A..., initial encounterT40.0X5D..., subsequent encounterT40.0X5S..., sequela