FY2026 · April
Effective from
- Inherited rules changed
Poisoning by, adverse effect of and underdosing of selective serotonin and norepinephrine reuptake inhibitors
Category — select a more specific code
CDC/NCHS · FY2026 · Aprilcode to identify any retained foreign body, if applicable (Z18.-)
toxic reaction to local anesthesia in pregnancy (O29.3-)
A — initial encounter
D — subsequent encounter
S — sequela
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2015-10-01
Latest recorded change · FY2026 · April
Effective from
Poisoning by, adverse effect of and underdosing of selective serotonin and norepinephrine reuptake inhibitors
Category — select a more specific code
CDC/NCHS · FY2026 · April| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | No tabular change |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | Inherited rules changed |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | Inherited rules changed |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | No tabular change |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | Inherited rules changed |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | Inherited rules changed |
| FY2027 | 2026-10-01 | No tabular change |
Poisoning by, adverse effect of and underdosing of SSNRI antidepressants
code to identify any retained foreign body, if applicable (Z18.-)
toxic reaction to local anesthesia in pregnancy (O29.3-)
The appropriate 7th character is to be added to each code from category T43
A — initial encounter
D — subsequent encounter
S — sequela
T43.211Poisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional)Category · further specificity requiredT43.212Poisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harmCategory · further specificity requiredT43.213Poisoning by selective serotonin and norepinephrine reuptake inhibitors, assaultCategory · further specificity requiredT43.214Poisoning by selective serotonin and norepinephrine reuptake inhibitors, undeterminedCategory · further specificity requiredT43.215Adverse effect of selective serotonin and norepinephrine reuptake inhibitorsCategory · further specificity requiredT43.216Underdosing of selective serotonin and norepinephrine reuptake inhibitorsCategory · further specificity requiredOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| T43.20 | Poisoning by, adverse effect of and underdosing of unspecified antidepressants | Category · further specificity required |
| T43.22 | Poisoning by, adverse effect of and underdosing of selective serotonin reuptake inhibitors | Category · further specificity required |
| T43.29 | Poisoning by, adverse effect of and underdosing of other antidepressants | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗
Code first · selective serotonin and norepinephrine reuptake inhibitors [SSNRI] (T43.21 with sixth character 1-4)