T27.4Header code — not billable
Corrosion of larynx and trachea
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T27
- Effective date
- October 1, 2026
Related codes in category T27
T27Burn and corrosion of respiratory tractT27.0Burn of larynx and tracheaT27.0XXABurn of larynx and trachea, initial encounterYesT27.0XXDBurn of larynx and trachea, subsequent encounterYesT27.0XXSBurn of larynx and trachea, sequelaYesT27.1Burn involving larynx and trachea with lungT27.1XXABurn involving larynx and trachea with lung, init encntrYesT27.1XXDBurn involving larynx and trachea with lung, subs encntrYesT27.1XXSBurn involving larynx and trachea with lung, sequelaYesT27.2Burn of other parts of respiratory tractT27.2XXABurn of other parts of respiratory tract, initial encounterYesT27.2XXDBurn of other parts of respiratory tract, subs encntrYes
Frequently asked questions
What is ICD-10 code T27.4?
T27.4 is an ICD-10-CM diagnosis code for Corrosion of larynx and trachea.
Is T27.4 a billable code?
No. T27.4 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is T27.4 in?
T27.4 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T27.4 become effective?
T27.4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T27.4?
T27.4 belongs to category T27, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.