T25.422S
✓ BillableCorrosion of unspecified degree of left foot, sequela
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ Excludes2
inheritedRules inherited from parent codes.
- • corrosion of unspecified degree of toe(s) (nail) (T25.43-)
📋 Code Instructions
inherited- • external cause code to identify place (Y92)
- • Code first: (T51-T65) to identify chemical and intent
Clinical Description
ICD-10-CM code T25.422S represents corrosion of unspecified degree of left foot, sequela. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 8-character code at the 7th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code T25.422S?
ICD-10-CM code T25.422S is "Corrosion of unspecified degree of left foot, sequela". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).
Is T25.422S a billable ICD-10 code?
Yes, T25.422S is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Can T25.422S be coded with other codes?
T25.422S has 1 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in T25.422
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)