T25.4
ICD-10Non-billable categoryCorrosion of unspecified degree of ankle and foot
Official ICD-10-CM descriptor (FY2026)
Corrosion of unspecified degree of ankle and foot
T25.4 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Code first
Sequence the underlying condition before this code.
- (T51-T65) to identify chemical and intent
Use additional code
Report an additional code to identify the associated condition.
- external cause code to identify place (Y92)
ICD-10-CM FY2026 defines 4 codes beneath T25.4. See the ICD-10-CM index for what this site publishes.
Related codes in T25
- T25.0Burn of unspecified degree of ankle and footcategory
- T25.1Burn of first degree of ankle and footcategory
- T25.2Burn of second degree of ankle and footcategory
- T25.3Burn of third degree of ankle and footcategory
- T25.5Corrosion of first degree of ankle and footcategory
- T25.6Corrosion of second degree of ankle and footcategory
- T25.7Corrosion of third degree of ankle and footcategory
Where this code sits
- Parent code
- T25
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.