ICD-10 CM Code S66.40
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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
S66.40
Unspecified injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
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S66.401 Unspecified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level
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S66.402 Unspecified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level
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S66.409 Unspecified 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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