T27.4
⚠ Non-billable (Header)Corrosion of larynx and trachea
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
📋 Code Instructions
direct- • Code first: (T51-T65) to identify chemical and intent
Child Codes (3)
Clinical Description
ICD-10-CM code T27.4 represents corrosion of larynx and trachea. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 5-character code at the 4th level of specificity. There are 3 more specific child codes under T27.4.
Frequently Asked Questions
What is ICD-10 code T27.4?
ICD-10-CM code T27.4 is "Corrosion of larynx and trachea". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).
Is T27.4 a billable ICD-10 code?
No, T27.4 is a non-billable header code. A more specific child code must be used for billing.
Related Codes in T27
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)