ICD-10 CM Code S66.499
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S66 Injury of muscle, fascia and tendon at wrist and hand level
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S66.4 Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
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S66.49 Other specified injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
S66.499
Other specified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level
Excludes Type 2
- sprain of joints and ligaments of wrist and hand (S63.-)
7th Character
- The appropriate 7th character is to be added to each code from category S66
- A - initial encounter
- D - subsequent encounter
- S - sequela
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