Injuries to the knee and lower leg (S80-S89)
S80: Superficial injury of knee and lower leg

excludes2
superficial injury of ankle and foot (S90.-)

sevenChrNote
The appropriate 7th character is to be added to each code from category S80

sevenChrDef
A: initial encounter
D: subsequent encounter
S: sequela
S80.0: Contusion of knee
S80.1: Contusion of lower leg
S80.2: Other superficial injuries of knee
S80.8: Other superficial injuries of lower leg
S80.9: Unspecified superficial injury of knee and lower leg

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