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T20.4

ICD-10-CM 2027

Corrosion of unspecified degree of head, face, and neck

Child codes

  • T20.40 – Corrosion of unspecified degree of head, face, and neck, unspecified site
  • T20.41 – Corrosion of unspecified degree of ear [any part, except ear drum]
  • T20.42 – Corrosion of unspecified degree of lip(s)
  • T20.43 – Corrosion of unspecified degree of chin
  • T20.44 – Corrosion of unspecified degree of nose (septum)
  • T20.45 – Corrosion of unspecified degree of scalp [any part]
  • T20.46 – Corrosion of unspecified degree of forehead and cheek
  • T20.47 – Corrosion of unspecified degree of neck
  • T20.49 – Corrosion of unspecified degree of multiple sites of head, face, and neck

Sibling codes

  • T20.0 – Burn of unspecified degree of head, face, and neck
  • T20.1 – Burn of first degree of head, face, and neck
  • T20.2 – Burn of second degree of head, face, and neck
  • T20.3 – Burn of third degree of head, face, and neck
  • T20.5 – Corrosion of first degree of head, face, and neck
  • T20.6 – Corrosion of second degree of head, face, and neck
  • T20.7 – Corrosion of third 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)

Inherited from T20: Burn and corrosion of head, face, and neck

7th character

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

7th character note

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

Excludes2

  • 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)

Part of: T20: Burn and corrosion of head, face, and neck