All ICD10 Codes

T25.4

Non-Billable
ChapterS00–T88
Ranksubcategory
Official Description

Corrosion of unspecified degree of ankle and foot

Use a more specific code (0 billable, 4 non-billable)
T25.41Corrosion of unspecified degree of anklehas subcodesT25.42Corrosion of unspecified degree of foothas subcodesT25.43Corrosion of unspecified degree of toe(s) (nail)has subcodesT25.49Corrosion of unspecified degree of multiple sites of ankle and foothas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

Instructional Notes

Code First
  • (T51-T65) to identify chemical and intent
Use Additional Code
  • external cause code to identify place (Y92)
General instructions are available for the parent sections:
View CH19 NotesView T20-T25 Notes

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
T20-T25Burns and corrosions of external body surface, specified by site (T20-T25)
T25Burn and corrosion of ankle and foot
T25.4Corrosion of unspecified degree of ankle and footNot billable
T25.41Corrosion of unspecified degree of ankleSubcodes
T25.42Corrosion of unspecified degree of footSubcodes
T25.43Corrosion of unspecified degree of toe(s) (nail)Subcodes
T25.49Corrosion of unspecified degree of multiple sites of ankle and footSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T25.4:

blockT20-T25
Burns and corrosions of external body surface, specified by site (T20-T25)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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