T20 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Burn and corrosion of head, face, and neck.
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The appropriate 7th character is to be added to each code from category T20
A: initial encounter
D: subsequent encounter
S: sequela
Burn of unspecified degree of head, face, and neck
Burn of first degree of head, face, and neck
Burn of second degree of head, face, and neck
Burn of third degree of head, face, and neck
Corrosion of unspecified degree of head, face, and neck
Corrosion of first degree of head, face, and neck
Corrosion of second degree of head, face, and neck
Corrosion of third degree of head, face, and neck
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