ICD-10-CM > S00-T88 > T36-T50 > T43 > T43.0 > T43.02 T43.02 Poisoning by, adverse effect of and underdosing of tetracyclic antidepressants Non-Billable/Non-Specific Codes T43.021Poisoning by tetracyclic antidepressants, accidental (unintentional)T43.021A..., initial encounterT43.021D..., subsequent encounterT43.021S..., sequelaT43.022Poisoning by tetracyclic antidepressants, intentional self-harmT43.022A..., initial encounterT43.022D..., subsequent encounterT43.022S..., sequelaT43.023Poisoning by tetracyclic antidepressants, assaultT43.023A..., initial encounterT43.023D..., subsequent encounterT43.023S..., sequelaT43.024Poisoning by tetracyclic antidepressants, undeterminedT43.024A..., initial encounterT43.024D..., subsequent encounterT43.024S..., sequelaT43.025Adverse effect of tetracyclic antidepressantsT43.025A..., initial encounterT43.025D..., subsequent encounterT43.025S..., sequelaT43.026Underdosing of tetracyclic antidepressantsT43.026A..., initial encounterT43.026D..., subsequent encounterT43.026S..., sequela