T25.429 — Corrosion of unspecified degree of unspecified foot
Is T25.429 billable?
No — T25.429 is a non-billable header code. T25.429 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 3 billable codes beneath T25.429.
T25.429 at a glance
| Code | T25.429 |
|---|---|
| Description | Corrosion of unspecified degree of unspecified foot |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is T25.429 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to T25.429. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Corrosion › foot (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
Code first — inherited from T25.4
The underlying condition below must be sequenced before T25.429. T25.429 describes a manifestation and cannot be the principal or first-listed diagnosis.
- (T51-T65) to identify chemical and intent
Use additional code — inherited from Chapter 19
Report an additional code alongside T25.429 to fully describe the condition. T25.429 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T20-T25
Report an additional code alongside T25.429 to fully describe the condition. T25.429 is sequenced first.
Use additional code — inherited from T25.4
Report an additional code alongside T25.429 to fully describe the condition. T25.429 is sequenced first.
- external cause code to identify place (Y92)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T25.429, but a patient may have both at the same time. When documentation supports it, T25.429 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T25.42
The conditions below are not part of T25.429, but a patient may have both at the same time. When documentation supports it, T25.429 and the excluded code may both be reported.
- corrosion of unspecified degree of toe(s) (nail) (T25.43-)
What codes fall under T25.429? (3)
How long has T25.429 existed?
T25.429 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.