Get started free

T25.4

Non-billable

Corrosion of unspecified degree of ankle and foot

T25.4 is the ICD-10-CM code for Corrosion of unspecified degree of ankle and foot. It is a non-billable category code — use a more specific child code such as T25.41 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T25
Subcodes
4
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Code first

  • •(T51-T65) to identify chemical and intent

Use additional code

  • •external cause code to identify place (Y92)

Frequently asked questions

What is ICD-10 code T25.4?
T25.4 is the ICD-10-CM code for "Corrosion of unspecified degree of ankle and foot". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T25.4 a billable code?
No — T25.4 is a non-billable header code. Use a more specific child code (such as T25.41) for billing.
What are the subcodes of T25.4?
T25.4 has 4 more specific child codes, including T25.41, T25.42, T25.43.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.

Get started freeSee how Eleplan works →