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T25.7

T25.7: Corrosion of third degree of ankle and foot

Non-billable headerICD-10-CM

T25.7 is a non-billable header ICD-10-CM code for corrosion of third degree of ankle and foot. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T25

A
initial encounter
D
subsequent encounter
S
sequela

Code first

The underlying condition must be sequenced before this code.

  • (T51-T65) to identify chemical and intent

Use additional code

Add a secondary code to capture the detail described below.

  • external cause code to identify place (Y92)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T25.7

4 child codes. Green means billable.

Other codes under T25

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.