T25.412Header code — not billable

Corrosion of unspecified degree of left ankle

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
T25
Effective date
October 1, 2026

Related codes in category T25

Frequently asked questions

What is ICD-10 code T25.412?

T25.412 is an ICD-10-CM diagnosis code for Corrosion of unspecified degree of left ankle.

Is T25.412 a billable code?

No. T25.412 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is T25.412 in?

T25.412 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T25.412 become effective?

T25.412 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T25.412?

T25.412 belongs to category T25, which includes 12 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.