ICD-10 CM Code S21.421
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S21 Open wound of thorax
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S21.4 Open wound of back wall of thorax with penetration into thoracic cavity
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S21.42 Laceration with foreign body of back wall of thorax with penetration into thoracic cavity
S21.421
Laceration with foreign body of right back wall of thorax with penetration into thoracic cavity
Excludes Type 1
- traumatic amputation (partial) of thorax (S28.1)
7th Character
- The appropriate 7th character is to be added to each code from category S21
- A - initial encounter
- D - subsequent encounter
- S - sequela
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