Is T43.21 a billable code?
No. T43.21 is a header code that groups 18 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T43.21: Poisoning by, adverse effect of and underdosing of selective serotonin and norepinephrine reuptake inhibitors
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T43.21 groups related diagnoses under poisoning by, adverse effect of and underdosing of selective serotonin and norepinephrine reuptake inhibitors. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T43.21
- T43.211APoisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional), initial encounter
- T43.211DPoisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional), subsequent encounter
- T43.211SPoisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional), sequela
- T43.212APoisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harm, initial encounter
- T43.212DPoisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harm, subsequent encounter
- T43.212SPoisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harm, sequela
- T43.213APoisoning by selective serotonin and norepinephrine reuptake inhibitors, assault, initial encounter
- T43.213DPoisoning by selective serotonin and norepinephrine reuptake inhibitors, assault, subsequent encounter
- T43.213SPoisoning by selective serotonin and norepinephrine reuptake inhibitors, assault, sequela
- T43.214APoisoning by selective serotonin and norepinephrine reuptake inhibitors, undetermined, initial encounter
- T43.214DPoisoning by selective serotonin and norepinephrine reuptake inhibitors, undetermined, subsequent encounter
- T43.214SPoisoning by selective serotonin and norepinephrine reuptake inhibitors, undetermined, sequela
- T43.215AAdverse effect of selective serotonin and norepinephrine reuptake inhibitors, initial encounter
- T43.215DAdverse effect of selective serotonin and norepinephrine reuptake inhibitors, subsequent encounter
- T43.215SAdverse effect of selective serotonin and norepinephrine reuptake inhibitors, sequela
- T43.216AUnderdosing of selective serotonin and norepinephrine reuptake inhibitors, initial encounter
- T43.216DUnderdosing of selective serotonin and norepinephrine reuptake inhibitors, subsequent encounter
- T43.216SUnderdosing of selective serotonin and norepinephrine reuptake inhibitors, sequela
Other codes in T43.2 Poisoning by, adverse effect of and underdosing of other and unspecified antidepressants
T43.21 questions
What does T43.21 mean?
T43.21 is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of selective serotonin and norepinephrine reuptake inhibitors. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.