T28.5
ICD-10Non-billable categoryCorrosion of mouth and pharynx
Official ICD-10-CM descriptor (FY2026)
Corrosion of mouth and pharynx
T28.5 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
Related codes in T28
- T28.0Burn of mouth and pharynxcategory
- T28.1Burn of esophaguscategory
- T28.2Burn of other parts of alimentary tractcategory
- T28.3Burn of internal genitourinary organscategory
- T28.4Burns of other and unspecified internal organscategory
- T28.6Corrosion of esophaguscategory
- T28.7Corrosion of other parts of alimentary tractcategory
- T28.8Corrosion of internal genitourinary organscategory
- T28.9Corrosions of other and unspecified internal organscategory
Where this code sits
- Parent code
- T28
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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.