Chapter 19

S00–T88: Injury, Poisoning and Certain Other Consequences of External Causes

Injury, Poisoning and Certain Other Consequences of External Causes diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)
Internal Codes
  • T43.223S|

    Poisoning by selective serotonin reuptake inhibitors, assault, sequela

  • T43.224|

    Poisoning by selective serotonin reuptake inhibitors, undetermined

  • T43.224A|

    Poisoning by selective serotonin reuptake inhibitors, undetermined, initial encounter

  • T43.224D|

    Poisoning by selective serotonin reuptake inhibitors, undetermined, subsequent encounter

  • T43.224S|

    Poisoning by selective serotonin reuptake inhibitors, undetermined, sequela

  • T43.225|

    Adverse effect of selective serotonin reuptake inhibitors

  • T43.225A|

    Adverse effect of selective serotonin reuptake inhibitors, initial encounter

  • T43.225D|

    Adverse effect of selective serotonin reuptake inhibitors, subsequent encounter

  • T43.225S|

    Adverse effect of selective serotonin reuptake inhibitors, sequela

  • T43.226|

    Underdosing of selective serotonin reuptake inhibitors

  • T43.226A|

    Underdosing of selective serotonin reuptake inhibitors, initial encounter

  • T43.226D|

    Underdosing of selective serotonin reuptake inhibitors, subsequent encounter

  • T43.226S|

    Underdosing of selective serotonin reuptake inhibitors, sequela

  • T43.29|

    Poisoning by, adverse effect of and underdosing of other antidepressants

  • T43.291|

    Poisoning by other antidepressants, accidental (unintentional)

  • T43.291A|

    Poisoning by other antidepressants, accidental (unintentional), initial encounter

  • T43.291D|

    Poisoning by other antidepressants, accidental (unintentional), subsequent encounter

  • T43.291S|

    Poisoning by other antidepressants, accidental (unintentional), sequela

  • T43.292|

    Poisoning by other antidepressants, intentional self-harm

  • T43.292A|

    Poisoning by other antidepressants, intentional self-harm, initial encounter

  • T43.292D|

    Poisoning by other antidepressants, intentional self-harm, subsequent encounter

  • T43.292S|

    Poisoning by other antidepressants, intentional self-harm, sequela

  • T43.293|

    Poisoning by other antidepressants, assault

  • T43.293A|

    Poisoning by other antidepressants, assault, initial encounter

  • T43.293D|

    Poisoning by other antidepressants, assault, subsequent encounter

  • T43.293S|

    Poisoning by other antidepressants, assault, sequela

  • T43.294|

    Poisoning by other antidepressants, undetermined

  • T43.294A|

    Poisoning by other antidepressants, undetermined, initial encounter

  • T43.294D|

    Poisoning by other antidepressants, undetermined, subsequent encounter

  • T43.294S|

    Poisoning by other antidepressants, undetermined, sequela

  • T43.295|

    Adverse effect of other antidepressants

  • T43.295A|

    Adverse effect of other antidepressants, initial encounter

  • T43.295D|

    Adverse effect of other antidepressants, subsequent encounter

  • T43.295S|

    Adverse effect of other antidepressants, sequela

  • T43.296|

    Underdosing of other antidepressants

  • T43.296A|

    Underdosing of other antidepressants, initial encounter

  • T43.296D|

    Underdosing of other antidepressants, subsequent encounter

  • T43.296S|

    Underdosing of other antidepressants, sequela

  • T43.3|

    Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics

  • T43.3X|

    Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics

  • T43.3X1|

    Poisoning by phenothiazine antipsychotics and neuroleptics, accidental (unintentional)

  • T43.3X1A|

    Poisoning by phenothiazine antipsychotics and neuroleptics, accidental (unintentional), initial encounter

  • T43.3X1D|

    Poisoning by phenothiazine antipsychotics and neuroleptics, accidental (unintentional), subsequent encounter

  • T43.3X1S|

    Poisoning by phenothiazine antipsychotics and neuroleptics, accidental (unintentional), sequela

  • T43.3X2|

    Poisoning by phenothiazine antipsychotics and neuroleptics, intentional self-harm

  • T43.3X2A|

    Poisoning by phenothiazine antipsychotics and neuroleptics, intentional self-harm, initial encounter

  • T43.3X2D|

    Poisoning by phenothiazine antipsychotics and neuroleptics, intentional self-harm, subsequent encounter

  • T43.3X2S|

    Poisoning by phenothiazine antipsychotics and neuroleptics, intentional self-harm, sequela

  • T43.3X3|

    Poisoning by phenothiazine antipsychotics and neuroleptics, assault

  • T43.3X3A|

    Poisoning by phenothiazine antipsychotics and neuroleptics, assault, initial encounter

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