T27.4

Billable code

Corrosion of larynx and trachea

The ICD-10 code for corrosion of larynx and trachea is T27.4.

Clinical notes

Code first

This code represents a manifestation of an underlying disease. Coding convention requires the underlying (etiology) code to be sequenced first, with this code listed second.

(T51-T65) to identify chemical and intent

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•This code represents a manifestation. Documentation should identify the underlying condition, which must be coded first.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

Clinical notes

Code first

Documentation support

Related codes in this category