ICD-10 CM Code S40.821
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S40 Superficial injury of shoulder and upper arm
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S40.8 Other superficial injuries of upper arm
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S40.82 Blister (nonthermal) of upper arm
S40.821
Blister (nonthermal) of right upper arm
7th Character
- The appropriate 7th character is to be added to each code from category S40
- A - initial encounter
- D - subsequent encounter
- S - sequela
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