ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.9 > T50.90 T50.90 Poisoning by, adverse effect of and underdosing of unspecified drugs, medicaments and biological substances Non-Billable/Non-Specific Codes T50.901Poisoning by unspecified drugs, medicaments and biological substances, accidental (unintentional)T50.901A..., initial encounterT50.901D..., subsequent encounterT50.901S..., sequelaT50.902Poisoning by unspecified drugs, medicaments and biological substances, intentional self-harmT50.902A..., initial encounterT50.902D..., subsequent encounterT50.902S..., sequelaT50.903Poisoning by unspecified drugs, medicaments and biological substances, assaultT50.903A..., initial encounterT50.903D..., subsequent encounterT50.903S..., sequelaT50.904Poisoning by unspecified drugs, medicaments and biological substances, undeterminedT50.904A..., initial encounterT50.904D..., subsequent encounterT50.904S..., sequelaT50.905Adverse effect of unspecified drugs, medicaments and biological substancesT50.905A..., initial encounterT50.905D..., subsequent encounterT50.905S..., sequelaT50.906Underdosing of unspecified drugs, medicaments and biological substancesT50.906A..., initial encounterT50.906D..., subsequent encounterT50.906S..., sequela