ICD-10 CM Code T20.4
T20.4
Corrosion of unspecified degree of head, face, and neck
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T20.40 Corrosion of unspecified degree of head, face, and neck, unspecified site
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T20.41 Corrosion of unspecified degree of ear [any part, except ear drum]
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T20.42 Corrosion of unspecified degree of lip(s)
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T20.43 Corrosion of unspecified degree of chin
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T20.44 Corrosion of unspecified degree of nose (septum)
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T20.45 Corrosion of unspecified degree of scalp [any part]
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T20.46 Corrosion of unspecified degree of forehead and cheek
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T20.47 Corrosion of unspecified degree of neck
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T20.49 Corrosion of unspecified degree of multiple sites of head, face, and neck
Excludes Type 2
- 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
- The appropriate 7th character is to be added to each code from category T20
- A - initial encounter
- D - subsequent encounter
- S - sequela
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