T20.66 Corrosion of second degree of forehead and cheek

Non-billable ICD-10-CM code.

Applies from T20 Burn and corrosion of head, face, and neck

Excludes2 (not included here)

• burn and corrosion of ear drum (T28.41, T28.91)
• burn and corrosion of eye and adnexa (T26.-)
• burn and corrosion of mouth and pharynx (T28.0)

7th character note

• The appropriate 7th character is to be added to each code from category T20

7th character required

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

Applies from T20.6 Corrosion of second degree of head, face, and neck

Code first

• (T51-T65) to identify chemical and intent

Use additional code

• external cause code to identify place (Y92)

Code annotations containing back-references to T20.66

Back-references to T20

• 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 T20.66

• Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › cheek › second degree
• Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › forehead › second degree

Nearby codes

• T20.64XS Corrosion of second degree of nose (septum), sequela
• T20.65 Corrosion of second degree of scalp [any part]
• T20.65XA Corrosion of second degree of scalp [any part], initial encounter
• T20.65XD Corrosion of second degree of scalp [any part], subsequent encounter
• T20.65XS Corrosion of second degree of scalp [any part], sequela
• T20.66 Corrosion of second degree of forehead and cheek (this code)
• T20.66XA Corrosion of second degree of forehead and cheek, initial encounter
• T20.66XD Corrosion of second degree of forehead and cheek, subsequent encounter
• T20.66XS Corrosion of second degree of forehead and cheek, sequela
• T20.67 Corrosion of second degree of neck
• T20.67XA Corrosion of second degree of neck, initial encounter