ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.9 > T50.91 > T50.915 T50.915 Adverse effect of multiple unspecified drugs, medicaments and biological substances Non-Billable/Non-Specific Codes T50.915A..., initial encounterT50.915D..., subsequent encounterT50.915S..., sequela