FY2025 · 04-01
Effective from
- Inherited rules changed
Toxic effect of homologues of benzene, accidental (unintentional)
Category — select a more specific code
CDC/NCHS · FY2025 · 04-01code to identify any retained foreign body, if applicable (Z18.-)
contact with and (suspected) exposure to toxic substances (Z77.-)
halogen derivatives of aliphatic and aromatic hydrocarbons (T53.-)
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
Toxic effect of homologues of benzene, accidental (unintentional)
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 | No tabular change |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | No tabular change |
| 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 |
Toxic effects of homologues of benzene NOS
code to identify any retained foreign body, if applicable (Z18.-)
contact with and (suspected) exposure to toxic substances (Z77.-)
When no intent is indicated code to accidental. Undetermined intent is only for use when there is specific documentation in the record that the intent of the toxic effect cannot be determined.
halogen derivatives of aliphatic and aromatic hydrocarbons (T53.-)
The appropriate 7th character is to be added to each code from category T52
A — initial encounter
D — subsequent encounter
S — sequela
T52.2X1AToxic effect of homologues of benzene, accidental (unintentional), initial encounterBillable / specificT52.2X1DToxic effect of homologues of benzene, accidental (unintentional), subsequent encounterBillable / specificT52.2X1SToxic effect of homologues of benzene, accidental (unintentional), sequelaBillable / specificOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| T52.2X2 | Toxic effect of homologues of benzene, intentional self-harm | Category · further specificity required |
| T52.2X3 | Toxic effect of homologues of benzene, assault | Category · further specificity required |
| T52.2X4 | Toxic effect of homologues of benzene, undetermined | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗