Burn and corrosion of head, face, and neck

**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)

**7th character note:** - The appropriate 7th character is to be added to each code from category T20

**7th character:** - A: initial encounter - D: subsequent encounter - S: sequela