T25.499Header code — not billable

Corrosion of unspecified degree of multiple sites of unspecified ankle and foot

Short description: Corrosion of unsp deg mult sites of unsp ankle and foot

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

Related codes in category T25

T25Burn and corrosion of ankle and footT25.0Burn of unspecified degree of ankle and footT25.01Burn of unspecified degree of ankleT25.011Burn of unspecified degree of right ankleT25.011ABurn of unspecified degree of right ankle, initial encounterYesT25.011DBurn of unspecified degree of right ankle, subs encntrYesT25.011SBurn of unspecified degree of right ankle, sequelaYesT25.012Burn of unspecified degree of left ankleT25.012ABurn of unspecified degree of left ankle, initial encounterYesT25.012DBurn of unspecified degree of left ankle, subs encntrYesT25.012SBurn of unspecified degree of left ankle, sequelaYesT25.019Burn of unspecified degree of unspecified ankle

Frequently asked questions

What is ICD-10 code T25.499?

T25.499 is an ICD-10-CM diagnosis code for Corrosion of unspecified degree of multiple sites of unspecified ankle and foot.

Is T25.499 a billable code?

No. T25.499 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 T25.499 in?

T25.499 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T25.499 become effective?

T25.499 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T25.499?

T25.499 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.