Burns and corrosions of external body surface, specified by site (T20-T25)
T21: Burn and corrosion of trunk

includes
burns and corrosion of hip region

excludes2
burns and corrosion of axilla (T22.- with fifth character 4)
burns and corrosion of scapular region (T22.- with fifth character 6)
burns and corrosion of shoulder (T22.- with fifth character 5)

sevenChrNote
The appropriate 7th character is to be added to each code from category T21

sevenChrDef
A: initial encounter
D: subsequent encounter
S: sequela
T21.0: Burn of unspecified degree of trunk
T21.1: Burn of first degree of trunk
T21.2: Burn of second degree of trunk
T21.3: Burn of third degree of trunk
T21.4: Corrosion of unspecified degree of trunk
T21.5: Corrosion of first degree of trunk
T21.6: Corrosion of second degree of trunk
T21.7: Corrosion of third degree of trunk

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