ICD-10-CM > S00-T88 > T36-T50 > T42 > T42.3 > T42.3X > T42.3X2 T42.3X2 Poisoning by barbiturates, intentional self-harm Non-Billable/Non-Specific Codes T42.3X2A..., initial encounterT42.3X2D..., subsequent encounterT42.3X2S..., sequela