Skip to content
Dx

ICD-10-CM 2027

ICD-10 code for lung corrosion

T27.5

Corrosion involving larynx and trachea with lung

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › lung (with larynx and trachea)”. Page updated September 29, 2026.

About coding lung corrosion

The ICD-10-CM code for lung corrosion is T27.5 (Corrosion involving larynx and trachea with lung).

Within T27 (burn and corrosion of respiratory tract), T27.5 is specifically for corrosion involving larynx and trachea with lung. Related codes cover burn of larynx and trachea (T27.0), burn involving larynx and trachea with lung (T27.1), burn of other parts of respiratory tract (T27.2), burn of respiratory tract, part unspecified (T27.3), corrosion of larynx and trachea (T27.4), corrosion of other parts of respiratory tract (T27.6) and corrosion of respiratory tract, part unspecified (T27.7).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Code first: (T51-T65) to identify chemical and intent.

Common questions about lung corrosion ICD-10 codes

What is the ICD-10 code for lung corrosion?

T27.5 — Corrosion involving larynx and trachea with lung (a header code; report a more specific subcode).

Is T27.5 billable?

No. T27.5 is a header code. Report one of its more specific subcodes instead.