T32: Corrosions classified according to extent of body surface involved
T32.2: Corrosions involving 20-29% of body surface
T32.20: Corrosions involving 20-29% of body surface with 0% to 9% third degree corrosion
T32.21: Corrosions involving 20-29% of body surface with 10-19% third degree corrosion
T32.22: Corrosions involving 20-29% of body surface with 20-29% third degree corrosion

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