T24.4
ICD-10Non-billable categoryCorrosion of unsp degree of lower limb, except ank/ft
Official ICD-10-CM descriptor (FY2026)
Corrosion of unspecified degree of lower limb, except ankle and foot
T24.4 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 5 codes beneath T24.4. See the ICD-10-CM index for what this site publishes.
Related codes in T24
- T24.0Burn of unsp degree of lower limb, except ankle and footcategory
- T24.1Burn of first degree of lower limb, except ankle and footcategory
- T24.2Burn of second degree of lower limb, except ankle and footcategory
- T24.3Burn of third degree of lower limb, except ankle and footcategory
- T24.5Corrosion of first degree of lower limb, except ank/ftcategory
- T24.6Corrosion of second degree of lower limb, except ank/ftcategory
- T24.7Corrosion of third degree of lower limb, except ank/ftcategory
Where this code sits
- Parent code
- T24
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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.