FY2025 · 04-01
Effective from
- Inherited rules changed
Corrosion of first degree of head, face, and neck
Category — select a more specific code
CDC/NCHS · FY2025 · 04-01external cause code to identify place (Y92)
code to identify any retained foreign body, if applicable (Z18.-)
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
Corrosion of first degree of head, face, and neck
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 |
external cause code to identify place (Y92)
code to identify any retained foreign body, if applicable (Z18.-)
The appropriate 7th character is to be added to each code from category T20
A — initial encounter
D — subsequent encounter
S — sequela
T20.50Corrosion of first degree of head, face, and neck, unspecified siteCategory · further specificity requiredT20.51Corrosion of first degree of ear [any part, except ear drum]Category · further specificity requiredT20.52Corrosion of first degree of lip(s)Category · further specificity requiredT20.53Corrosion of first degree of chinCategory · further specificity requiredT20.54Corrosion of first degree of nose (septum)Category · further specificity requiredT20.55Corrosion of first degree of scalp [any part]Category · further specificity requiredT20.56Corrosion of first degree of forehead and cheekCategory · further specificity requiredT20.57Corrosion of first degree of neckCategory · further specificity requiredT20.59Corrosion of first degree of multiple sites of head, face, and neckCategory · further specificity requiredOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| T20.0 | Burn of unspecified degree of head, face, and neck | Category · further specificity required |
| T20.1 | Burn of first degree of head, face, and neck | Category · further specificity required |
| T20.2 | Burn of second degree of head, face, and neck | Category · further specificity required |
| T20.3 | Burn of third degree of head, face, and neck | Category · further specificity required |
| T20.4 | Corrosion of unspecified degree of head, face, and neck | Category · further specificity required |
| T20.6 | Corrosion of second degree of head, face, and neck | Category · further specificity required |
| T20.7 | Corrosion of third degree of head, face, and neck | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗