T43.21 — Poisoning by, adverse effect of and underdosing of selective serotonin and norepinephrine reuptake inhibitors
Is T43.21 billable?
No — T43.21 is a non-billable header code. T43.21 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 18 billable codes beneath T43.21.
Billable codes under this header
- 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
T43.21 at a glance
| Code | T43.21 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of selective serotonin and norepinephrine reuptake inhibitors |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Inclusion terms
Alternative wording in documentation that is classified to T43.21.
- Poisoning by, adverse effect of and underdosing of SSNRI antidepressants
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T43.21 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T43.21. T43.21 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T43.21 to fully describe the condition. T43.21 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T43.21 to fully describe the condition. T43.21 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T43.21, but a patient may have both at the same time. When documentation supports it, T43.21 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T43.21, but a patient may have both at the same time. When documentation supports it, T43.21 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T43
The conditions below are not part of T43.21, but a patient may have both at the same time. When documentation supports it, T43.21 and the excluded code may both be reported.
What codes fall under T43.21? (6)
- T43.211Poisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional)not billable
- T43.212Poisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harmnot billable
- T43.213Poisoning by selective serotonin and norepinephrine reuptake inhibitors, assaultnot billable
- T43.214Poisoning by selective serotonin and norepinephrine reuptake inhibitors, undeterminednot billable
- T43.215Adverse effect of selective serotonin and norepinephrine reuptake inhibitorsnot billable
- T43.216Underdosing of selective serotonin and norepinephrine reuptake inhibitorsnot billable
How long has T43.21 existed?
T43.21 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.