ICD-10-CM > S00-T88 > T36-T50 > T43 > T43.0 > T43.01 > T43.012 T43.012 Poisoning by tricyclic antidepressants, intentional self-harm Non-Billable/Non-Specific Codes T43.012A..., initial encounterT43.012D..., subsequent encounterT43.012S..., sequela