ICD-10 CM Code S66.4
S66.4
Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
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S66.40 Unspecified injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
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S66.41 Strain of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
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S66.42 Laceration 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
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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