T25.522Header code — not billable

Corrosion of first degree of left foot

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 T25.522?

T25.522 is an ICD-10-CM diagnosis code for Corrosion of first degree of left foot.

Is T25.522 a billable code?

No. T25.522 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 T25.522 in?

T25.522 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T25.522 become effective?

T25.522 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T25.522?

T25.522 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.