T27.4 Corrosion of larynx and trachea

Non-billable ICD-10-CM code.

Code first

• (T51-T65) to identify chemical and intent

Applies from T27 Burn and corrosion of respiratory tract

Use additional code

• external cause code to identify the source and intent of the burn (X00-X19, X75-X77, X96-X98)
• external cause code to identify place (Y92)

7th character note

• The appropriate 7th character is to be added to each code from category T27

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Code annotations containing back-references to T27.4

Back-references to T27

• Type 1 Excludes: T66 Radiation sickness, unspecified ("burns (T20-T31)")
• Type 2 Excludes: T67 Effects of heat and light ("burns (T20-T31)")
• Type 2 Excludes: T75 Other and unspecified effects of other external causes ("burns (electric) (T20-T31)")

Diagnosis Index entries for T27.4

• Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › epiglottis
• Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › larynx
• Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › trachea

Nearby codes

• T27.2XXS Burn of other parts of respiratory tract, sequela
• T27.3 Burn of respiratory tract, part unspecified
• T27.3XXA Burn of respiratory tract, part unspecified, initial encounter
• T27.3XXD Burn of respiratory tract, part unspecified, subsequent encounter
• T27.3XXS Burn of respiratory tract, part unspecified, sequela
• T27.4 Corrosion of larynx and trachea (this code)
• T27.4XXA Corrosion of larynx and trachea, initial encounter
• T27.4XXD Corrosion of larynx and trachea, subsequent encounter
• T27.4XXS Corrosion of larynx and trachea, sequela
• T27.5 Corrosion involving larynx and trachea with lung
• T27.5XXA Corrosion involving larynx and trachea with lung, initial encounter