FY2025 · 04-01
Effective from
- Inherited rules changed
Poisoning by, adverse effect of and underdosing of unspecified topical agent
Category — select a more specific code
CDC/NCHS · FY2025 · 04-01code 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 · FY2025 · 04-01
Effective from
Poisoning by, adverse effect of and underdosing of unspecified topical agent
Category — select a more specific code
CDC/NCHS · FY2025 · 04-01| 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 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
code to identify any retained foreign body, if applicable (Z18.-)
toxic reaction to local anesthesia in pregnancy (O29.3-)
poisoning by, adverse effect of and underdosing of glucocorticoids, topically used
The appropriate 7th character is to be added to each code from category T49
A — initial encounter
D — subsequent encounter
S — sequela
T49.91Poisoning by unspecified topical agent, accidental (unintentional)Category · further specificity requiredT49.92Poisoning by unspecified topical agent, intentional self-harmCategory · further specificity requiredT49.93Poisoning by unspecified topical agent, assaultCategory · further specificity requiredT49.94Poisoning by unspecified topical agent, undeterminedCategory · further specificity requiredT49.95Adverse effect of unspecified topical agentCategory · further specificity requiredT49.96Underdosing of unspecified topical agentCategory · further specificity requiredOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| T49.0 | Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugs | Category · further specificity required |
| T49.1 | Poisoning by, adverse effect of and underdosing of antipruritics | Category · further specificity required |
| T49.2 | Poisoning by, adverse effect of and underdosing of local astringents and local detergents | Category · further specificity required |
| T49.3 | Poisoning by, adverse effect of and underdosing of emollients, demulcents and protectants | Category · further specificity required |
| T49.4 | Poisoning by, adverse effect of and underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparations | Category · further specificity required |
| T49.5 | Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparations | Category · further specificity required |
| T49.6 | Poisoning by, adverse effect of and underdosing of otorhinolaryngological drugs and preparations | Category · further specificity required |
| T49.7 | Poisoning by, adverse effect of and underdosing of dental drugs, topically applied | Category · further specificity required |
| T49.8 | Poisoning by, adverse effect of and underdosing of other topical agents | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗